If A was to be debited by two thousand rupees but was credited how much is the correcting effect?

Correct answer: Debit four thousand rupees

The intended correction must consider both the wrong entry and the entry that should have been made. A was supposed to be debited ₹2,000, but was wrongly credited ₹2,000. First, the wrong credit has to be cancelled by debiting ₹2,000. Then the correct debit of ₹2,000 must also be recorded.

These two debit effects total ₹2,000 + ₹2,000 = ₹4,000 debit in the correction process. Therefore option A is correct. A mere ₹2,000 debit would only remove the wrong credit and would not separately record the debit that was originally required. The answer refers to the total correcting effect, not merely one of the two steps.