The ledger of Costello Company at the end of the current year shows Accounts Receivable $138,000, Sales Revenue $841,000, and Sales Returns and Allowances $26,000. (a) If Costello uses the direct write-off method to account for uncollectible accounts, journalize the adjusting entry at December 31, assuming Costello determines that Dole's $2,100 balance is uncollectible. (Credit account titles are automatically indented when amount is entered. Do not indent manually.) Date Account Titles and Explanation Debit Dec. 3 Bad Debt Expense T 2,100 Accounts Receivable 2,100 (b) If Allowance for Doubtful Accounts has a credit balance of $2,900 in the trial balance, journalize the adjusting entry at December 31, assuming bad debts are expected to be (1) 3% of net sales, and (2) 11% of accounts receivable. (Credit account titles are automatically indented when amount is entered. Do not indent manually) No. Date Account Titles and Explanation (1) Dec. 3 T Bad Debt Expense 13080 T Allowance for Doubtful 13080 (2) Dec. 31