On January 1, Year 2, the Accounts Receivable balance was $21,000 and the balance in the Allowance for Doubtful Accounts was $1,900. On January 15, Year 2, an $530 uncollectible account was written-off. The net realizable value of accounts receivable immediately after the write-off is: Multiple Choice

A)$20,470. B)$18,570. C)19,100. D)$19,630.