Final answer:
To correct the discrepancy between the canceled check for $790 and the erroneously entered amount of $970, the adjustment entry would be a debit to Utility Expense and a credit to Cash for $180, reconciling the books with the bank statement.
Step-by-step explanation:
When comparing the canceled checks on the bank statement with the entries in the accounting records, the discrepancy identified indicates a need to adjust the accounting records for accuracy in financial reporting. In this scenario, check number 2889 was written for $790 for December's utilities but mistakenly entered into the records as $970. This error leads to a financial mismatch, affecting the cash balance and utility expenses reported.
To correct this error, the adjustment in the journal entry would involve a debit to Utility Expense and a credit to Cash for the difference amount, which is $180. This adjustment reduces over-reported utilities expense and increases the cash that was under-reported due to the incorrect entry.
The correct journal entry to adjust the books for the bank reconciliation is therefore: debit Utility Expense and credit Cash for $180. Option a) is correct, reflecting the precise amount necessary to amend the books so that they match the actual transaction value.