Providing for doubtful accounts At the end of the current year, the accounts receivable account has a debit balance of $644,000 and sales for the year total $7,300,000. a. The allowance account before adjustment has a debit balance of $8,700, Bad debt expense is estimated at 3/4 of 1% of sales. b. The allowance account before adjustment has a dobit balence of $8,700. An aging of the accounts in the customer ledger indicates estimated doubtful accounts of $27,800. c. The allowance account before adjustment has a credit balance of $6,000, Bad debt expense is estimated at 1/4 of 1 . $ of sales. d. The allowance account before adjustment has a credit balance of $6,000. An aging of the accounts in the customer ledger indicates estimated doubtiul accounts of 549,800 . Determine the amount of the adfusting entry to provide for doubtful accounts under each of the assumptions (a through d) tisted above. a. $ b. 5 c. 5 d. 5