On January 1, a company's allowance for doubtful accounts had a debit balance of $21,000. During the year, it had net credit sales of $900,000 and it had $20,000 of uncollectible accounts receivable that were written off. Past experience indicates that the allowance should be 6% of the balance in receivables (percentage-of-receivables basis). If the accounts receivable balance at December 31 is $200,000, what is the bad debt expense for the year? No credit adjustment needed O $19.000 O $11,000 $53,000 O $33,000