The correct option for the question is B. contra entry. Explanation of the Correct Answer A contra entry is a type of transaction in accounting where two amounts are offset against each other in the cashbook. This means that when one account is debited, another account is credited for the same amount, effectively canceling each other out in the cashbook. Step-by-Step Breakdown:

1. Understanding the Cashbook:
2. The cashbook is a financial record that tracks all cash transactions, both cash receipts and cash payments. It serves as both a journal and a ledger for cash transactions.
3. What is a Contra Entry?:
4. A contra entry occurs when there is a transfer of funds between two accounts within the cashbook. For example, if cash is withdrawn from a bank account and deposited into the cash account, this transaction would be recorded as a contra entry.
5. In this case, the bank account is credited (decreased), and the cash account is debited (increased) for the same amount.
6. Example of a Contra Entry:
7. Suppose a business withdraws $500 from its bank account to put into the cash register. The entries would be:
   • Debit Cash Account: $500 (increasing cash)
   • Credit Bank Account: $500 (decreasing bank balance)
8. Both entries are recorded in the cashbook, and they offset each other.

Why Other Options are Incorrect:

• A. Original Entry:
• An original entry refers to the first recording of a transaction in the accounting records. It does not specifically relate to the concept of offsetting amounts in the cashbook. Therefore, it does not fit the definition of a contra entry.
• C. Prime Entry:
• Prime entry is a term that generally refers to the initial recording of a transaction in the books of accounts, typically in a journal. Like original entry, it does not imply the offsetting nature of a contra entry.
• D. Contract Entry:
• This term is not commonly used in accounting terminology. It may imply a transaction related to contracts, but it does not relate to the concept of offsetting amounts in the cashbook. Therefore, it is not relevant to the question.

Common Pitfalls:

• Students often confuse contra entries with original or prime entries because they may not fully understand the specific nature of each term. It’s important to remember that contra entries specifically involve offsetting amounts within the cashbook.
• Another common mistake is to overlook the importance of the cashbook as a dual-purpose record, which can lead to confusion about how transactions are recorded.

Revision Summary:

• A contra entry offsets one amount against another in the cashbook.
• It involves both a debit and a credit for the same amount, affecting two accounts.
• Examples include transferring cash from a bank account to a cash register.
• Understanding the definitions of original, prime, and contract entries helps clarify the concept of contra entries.