please help find answers for c & d thank you !

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Providing foe Doulthus Accounts Mt the end of the currem yeac, the accounts recevelie accost has a debit batance of $1,221,000 and 1 ales fer the year total $13,340,000. b. The alowance account before adjustment has a debic balance of $16,509. An ajing of the acceunts in the custemer ledser indicates estimated doubtrut accounts of $52, aco. \& The alowance acooumt befoee aspestment has a credit balance of $5,100. llad debt expense is estimated at 1/2 of 14 of sains. d. The dilowance acoesnt before adjultment has a crest balance of 35,100 , An aging of the bcceunts in the cuatomer ledger indicates estimated dousehe acesunts of 342 . 300 . PToviding for Doubtful Accounts At the end of the current year, the accounts receivable account has a debit balance of $1,221,000 and sales for the year total $13,840,000. a. The allowance account before adjustment has a debit balance of 516,500 . Bad debt expense is estimated at 1/4 of 1% of sales. b. The allowance account before adjustment has a debit balance of $16,500. An aging of the accounts in the customer ledger indicates estimated doubtful accoints of $52,800. c. The allowance account before adjustment has a credit balance of 35,100 . Bad debt expense is estimated at 1/2 of 1% of saies, d. The allowance account before adjustment has a credit balance of $5,100. An aging of the accounts in the customer ledger indicates extimatied doubeful accounts of s42, jo0, Determine the amount of the adjusting entry to provide for doubtil accounts under each of the assumptions (a through d) listed above. (1). c