help please

Concord Corporation had a 1/1/20 balance in the Allowance for Doubtful Accounts of $38500. During 2020, it wrote off $29000 of accounts and collected $8600 on accounts previously written off. The balance in Accounts Receivable was $810000 at 1/1 and $940000 at 12/31. At 12/31/20, Concord estimates that 5% of accounts receivable will prove to be uncollectible. What is Bad Debt Expense for 2020? $28900 $8500 $37500 O $47000