Providing for Doubthul Accounts At the end of the current year, the accounts receivabie account has a debit batance of $1,014,000 and sales for the year total $11,490,000. a. The aliowance account before adjustment has a debit baiance of $13,700. Bad debt expense is estimated at 3/4 of 1% of sales. b. The allowance account before adjustment has a debit balance of $13,700. An aging of the accounts in the customer ledger indicates estimated doubthal accuints of 343,800 . c. The allowance account before adjustment has a credit balance of $5,100. Bad debt expense is estimated at 1/2 of 1% of sales. d. The allowance account before adjustment has a credit balance of $5,100. An aging of the accounts in the customer ledger indicates estimated doubtful accounts of 342,300 Determine the amount of the adjusting entry to provide for doubtful accounts under each of the assumptions (a through d) listed above. a. 1 b. 1 . 1 d. 1