If a firm has an accounts receivable balance of $19,300 at the end of 2014, and $23,500 at the end of 2015, which of the following statements about accounts receivable is correct?

A. Accounts receivable increases by $4,200 and represented a use of cash. B. Accounts receivable decreased by $4,200 and represented a source of cash. C. Accounts receivable decreased by $4,200 and represented a use of cash. D. Accounts receivable increased by $4,200 and represented a source of cash.