Sunland Inc. sells to customers only on credit. For the year ended December 31, 2017, the following information is provided: Sales revenue Accounts receivable, 1/01/17 Allowance for doubtful accounts, 12/31/17 (before adjustment for bad debts) Collections during 2017 Accounts written off as uncollectible during 2017 Sales returns $854000 230000 500 477000 11000 6000 If Sunland estimates bad debts at 6% of net credit sales, how much is bad debt expense? $23930 $42730 550380 532130