On December 31, the company estimates future sales refunds to be $900. As of that date, the company has an unadjusted debit balance in Accounts Receivable of $25,000 and an unadjusted credit balance of $300 in Sales Refunds Payable. Complete the related adjusting entry by selecting the account names and dollar amounts from the drop-down menus. (Pay attention to the date set forth below.)