An aging of a company's accounts receivable indicates that $9700 are estimated to be uncollectible. If Allowance for Doubtful Accounts has a $3900 credit balance, the adjustment to record bad debts for the period will require a credit to Allowance for Doubtful Accounts for $9700. debit to Allowance for Doubtful Accounts for $5800. debit to Bad Debt Expense for $9700. debit to Bad Debt Expense for $5800