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Providing for Doubtful Accounts At the end of the current year, the accounts receivable account has a debit balance of $881,000 and sales for the year total $9,980,000. a. The allowance account before adjustment has a credit balance of $11,900. Bad debt expense is estimated at 3/4 of 1% of sales: b. The allowance account before adjustment has a credit balance of $11,900. An aging of the accounts in the customer ledger indicates estimated doubtful accounts of $38,100. c. The allowance account before adjustment has a debit balance of $8,400. Bad debt expense is estimated at 1/2 of 1% of sales. d. The allowance account before adjustment has a debit balance of $8,400. An 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. c. d