The following information is related to December 31, 2016 balances. Accounts receivable $1530000 Allowance for doubtful accounts (credit) (113000) Cash realizable value 1110000 During 2017 sales on account were $379000 and collections on account were $228000. Also, during 2017 the company wrote off $21500 in uncollectible accounts. An analysis of outstanding receivable accounts at year end indicated that bad debts should be estimated at $143000. Bad debt expense for 2017 is: $143000. $51500 $8500. $30000