Brown Company's account balances at December 31, 2014 for Accounts Receivable and the related Allowance for Doubtful Accounts are $920,000 debit and $1,400 credit, respectively. From an aging of accounts receivable, it is estimated that $23,000 of the December 31 receivables will be uncollectible. The necessary adjusting entry would include a credit to the allowance account for

A) $23,000 B) $24,400 C) $21,600 D) $1,400