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Freviding for Doubthut Accounts At the end of the current yeac, the accounts receivabie account has a debit balance of $740,000 and sales for the year total $4,390,000. a. The aliowance account before adjustment has a credit balance of $10,000. Bad sebt expense is estimated at 1/2 of 1 as of sales. b. The allowance account before adjustment has a credt balance of $10,000. An aging of the accounts in the customer ledger indicates estimated doubtfol accounts of 432,000 . c. The allowance account before adjustment has a debit balance of $8,600. Bad debt expense is estimated at 3/4 of 1 W of sales. d. The allowance account before adjustment has a debit balance of $8,600. An aging of the accourts in the customer iedger indicates estimated doubtful accounts of 571,400 . Determine the amount of the adjovting entry to provide for doubtful accounts under each of the assumptions (a threcigh d) listed above. a. 1 b. 1 c. 1 d. 1