In 2020. Warehouse 13 had net credit sales of $850000. On January 1, 2020. Allowance for Doubtful Accounts had a credit balance of $18000. During 2020,$27000 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, 2020? $160000 $27000 $25000 $16000