Final answer:
The correct answer is option 3.
Step-by-step explanation:
The correct answer is option 3) The adjustment for accrued fees of $16,340 was journalized as a debit to Accounts Payable for $16,430 and a credit to Fees Earned of $16,340.
When preparing an adjusted trial balance, all adjustments made to the accounts should result in equal debits and credits. In this case, option 3 results in an unequal entry, as the debit entry is $90 higher than the credit entry.
Therefore, option 3 is the correct answer as it would cause the adjusted trial balance totals to be unequal.