Providing for Doubtful Accounts At the end of the current year, the accounts receivable account has a debit balance of $718,000 and sales for the year total $8,140,000. a. The allowance account before adjustment has a debit balance of $9,700. Bad debt expense is estimated at 3/4 of 1% of sales. b. The allowance account before adjustment has a debit balance of $9,700. An aging of the accounts in the customer ledger indicates estimated doubtful accounts of $31,000. c. The allowance account before adjustment has a credit balance of $7,400. Bad debt expense is estimated at 1/4 of 1% of sales. d. The allowance account before adjustment has a credit balance of $7,400. An aging of the accounts in the customer ledger indicates estimated doubtful accounts of $61,400. Determine the amount of the adjusting entry to provide for doubtful accounts under each of the assumptions (a through d) listed above. a. $ 20,350 X b. $ 21,300 X c. $ 61,050 X d. $ 80,000 X