On December 31, 2012, Coolwear Inc

On December 31, 2012, Coolwear Inc. had balances in Accounts Receivable and Allowance for Uncollectible Accounts of $48,400 and $940, respectively. During 2013, Coolwear wrote off $820 in accounts receivable and determined that there should be an allowance for uncollectible accounts of $1,140 at December 31, 2013. Bad debt expense for 2013 would be:

A) $320.
B) $1,140.
C) $820.
D) $1,020.