Providing for Doubtful Accounts At the end of the current year, the accounts receivable account has a debit balance of $1.177.000 and sales for the year total $13,340,000. a. The allowance account before adjustment has a credit balance of $15,900. Bad debt expense is estimated at 1/2 of 1% of sales b. The allowance account before adjustment has a credit balance of $15,90o. An aging of the accounts in the customer ledger indicates estimated doubtful accounts of $50,900. c. The allowance account before adjustment has a debit balance of $8,400. Bad debt expense is estimated at 3/4 of 1% of sales d. The allowance account before adjustment has a debit balance of $8,400. aging of the accounts in the customer ledger indicates estimated doubtful accounts of $69,700 Determine the amount of the adjusting entry to provide for doubtful accounts under each of the assumptions (a through d) listed above. a. b. d