In 2017 Vaughn Manufacturing had net credit sales of $2190000. On January 1,2017, Allowance for Doubtful Accounts had a credit balance of $50500. During 2017, $90000 of uncollectible accounts receivable were written off. Past experience indicates that the allowance should be 10% of the balance in receivables (percentage of receivables basis). If the accounts receivable balance at December 31 was $610000, what is the required adjustment to the Allowance for Doubtful Accounts at December 31,2017? $61000 $26000 $90000 $100500o