In double-entry bookkeeping, a transaction must:

In double-entry bookkeeping, a transaction must:

• A. Affect only a single account.
• B. Affect at least two accounts with equal debits and credits.
• C. Balance automatically without verification.
• D. Involve only cash and bank accounts.

Answer: (B)

In double-entry bookkeeping, every transaction has a dual effect: it touches at least two accounts, with the total debits equal to the total credits. This balancing of debits and credits keeps the accounting equation in harmony and provides a built-in check on accuracy. A single-account entry would break this dual aspect and leave the books unbalanced. It’s not limited to cash and bank—any relevant accounts (assets, liabilities, equity, revenue, or expenses) can be involved. Balances aren’t automatic; they must be recorded with proper verification to ensure the two sides match.

In double-entry bookkeeping, every transaction has a dual effect: it touches at least two accounts, with the total debits equal to the total credits. This balancing of debits and credits keeps the accounting equation in harmony and provides a built-in check on accuracy. A single-account entry would break this dual aspect and leave the books unbalanced. It’s not limited to cash and bank—any relevant accounts (assets, liabilities, equity, revenue, or expenses) can be involved. Balances aren’t automatic; they must be recorded with proper verification to ensure the two sides match.