Correct Option: B. To summarize the total balances of subsidiary ledgers Detailed Explanation: Control accounts are a crucial component of the accounting system, particularly in the context of managing subsidiary ledgers. Here’s a step-by-step breakdown of why option B is the correct answer:

1. Definition of Control Accounts: Control accounts are summary accounts in the general ledger that consolidate the total balances of individual accounts from subsidiary ledgers. For example, a sales control account summarizes all the sales transactions recorded in the individual customer accounts within the accounts receivable subsidiary ledger.
2. Purpose of Control Accounts: The primary purpose of control accounts is to provide a quick overview of the total amounts owed by customers (in accounts receivable) or the total amounts owed to suppliers (in accounts payable). This allows businesses to monitor their financial position without needing to sift through every individual transaction.
3. Reconciliation: Control accounts facilitate the reconciliation process. By comparing the balance in the control account with the total of the individual balances in the subsidiary ledger, accountants can quickly identify discrepancies or errors. This is essential for maintaining accurate financial records.
4. Efficiency: By summarizing the total balances, control accounts enhance efficiency in financial reporting. Instead of preparing detailed reports for every transaction, businesses can focus on the summarized figures, which are easier to analyze and report.
5. Internal Control: Control accounts also serve as a tool for internal control. They help ensure that the accounting records are accurate and that there are no unauthorized transactions. Regular reconciliation of control accounts with subsidiary ledgers can help detect fraud or errors early.

Why Other Options Are Incorrect:

• Option A: To provide a detailed record of every transaction This option is incorrect because control accounts do not provide detailed records of every transaction. Instead, they summarize the totals from the subsidiary ledgers. Detailed records are maintained in the subsidiary ledgers themselves, not in the control accounts.
• Option C: To serve as the primary ledger for all financial transactions This option is misleading. Control accounts are not the primary ledger; they are part of the general ledger that summarizes information from subsidiary ledgers. The primary ledger for all financial transactions is the general ledger itself, which includes all accounts, not just control accounts.
• Option D: To eliminate the need for double-entry bookkeeping This option is incorrect because control accounts do not eliminate the need for double-entry bookkeeping. Double-entry bookkeeping is a fundamental principle of accounting that ensures every transaction is recorded in at least two accounts (debit and credit). Control accounts work within this framework to summarize information but do not replace the need for double-entry.

Summary of Key Points:

• Control accounts summarize the total balances of subsidiary ledgers, providing a quick overview of financial positions.
• They facilitate reconciliation and enhance efficiency in financial reporting.
• Control accounts are not detailed records of transactions, nor do they serve as the primary ledger.
• They do not eliminate the need for double-entry bookkeeping, which remains a core principle of accounting.

This understanding of control accounts is essential for effective financial management and accurate reporting in any business.