what should the entry be? please help

Question 20 of 50 -15 E Concord Corporation uses the percentage of receivables method for recording bad debts expense. The accounts receivable balance is $130000 and credit sales are $1310000. Management estimates that 5% of accounts receivable will be uncollectible. What adjusting entry will Concord Corporation make if the Allowance for Doubtful Accounts has a credit balance of $2600 before adjustment? 6500 Bad Debt Expense Accounts Receivable 6500 3900 Bad Debt Expense Accounts Receivable 3900 6500 Bad Debt Expense Allowance for Doubtfi Accounts 6500 Bao Debt Expense 3900 Allowance for Dorful 3900 Question 20 of 50 Accounts Receivable 6500 3900 Bad Debt Expense Accounts Receivable 3900 Bad Debt Expense 6500 6500 Allowance for Doubtful Accounts 3900 Bad Debt Expense Allowance for Doubtful Accounts 3900