Accounts receivable net realizable value for Castle Company. increased from $380,000 to $430,000 from January 1, 2018 to December 31, 2018. Also, you collected the following information: Accounts receivable, 12/31/17 $533,000 Accounts receivable, 12/31/18 $622,000 Accounts written off as uncollectible $21,000 Recovered accounts, that were previously written off $6,000 What is bad debt expense adjusted entry that Castle recorded in 2018?

A. DR Bad debt expense 50,000 CR Allowance for doubtful accounts 50,000

B. DR Bad debt expense 21,000 CR Allowance for doubtful accounts 21,000

C. DR Bad debt expense 27,000 CR Allowance for doubtful accounts 27,000

D. None of the above