A seller uses a periodic inventory system, and on April 4, it sells $5,000 in merchandise on credit (when its cost is $2,400) to a customer on credit terms of 3/10, n/30. On April 5, the customer returns merchandise for a cash refund of $500. Complete the seller's necessary journal entry by selecting the account names from the drop-down menus and entering the dollar amounts in the debit or credit columns.