I need help with the part c. Allowance for Doubtful accounts.

The last part gives me these options:

The following summarizes the aging of accounts receivable for Johnston Supplies, Inc. as of July 31, 2016 Total Accounts | Receivable $127,800 $90,500 $54,900 Number of Days Unpaid Historical % Uncollectible Not yet due 1-30 days past due 31-60 days past due Over 60 days past due 3% 13% 19% 34% Required a. The unadjusted balance of the Allowance for Doubtful Accounts of Johnston Supplies, Inc. is a credit balance in the amount of $29,337 on July 31, 2016. Prepare the required adjusting entry to record Bad Debt Expense for the year. (If no entry is required for a transaction/event, select "No Journal Entry Required" in the first account field.) View transaction list Journal entry worksheet Record the adjusting entry to record bad debt expense for the year July 31, 2016 Note: Enter debits before credits. Date General Journal Debit Credit July 31, 2016 Bad Debt Expense 7,947 Allowance for Doubtful Accounts 7,947 Record entry Clear entry View general journal