Current Attempt in ProgressIn $2021,$ Warehouse $13$ had net credit sales of $$748000.$ On January $1,2021,$ Allowance for Doubtful Accounts had a credit balance of $$15970.$ During $2021,$ $$28940$ of uncollectible accounts receivable were written off. Past experience indicates that the allowance should be $10\%$ of the balance in receivables $($percentage of receivable basis$).$ If the accounts receivable balance at December $31$ was $$160000,$ what is the required adjustment to the Allowance for Doubtful Accounts at December $31,2021?$$$31970$$$160000$$$28940$$$28970$