Sanchez Inc. sells to customers only on credit. For the year ended December 31, 2017, the following information is provided: Net sales: $843,000 Accounts Receivable, 1/1/17: 230,000 Allowance for doubtful accounts, before adjustment: 600 cr. Collections during 2017: 470,000 Accounts written-off as uncollectible during 2017: 13,000 If Sanchez estimates bad debts as 5% of net credit sales, how much is bad debt expense? . . $34,000 $42.150 $23,400 $15.200