An aging of a company's accounts receivable indicates that $9,000 are estimated to be uncollectible. If Allowance for Doubtful Accounts has a $1,100 credit balance, the adjustment to record bad debts for the period will require a a. debit to Allowance for Doubtful Accounts for $7,900. b. debit to Bad Debts Expense for $9,000. c. debit to Bad Debts Expense for $7,900. d. credit to Allowance for Doubtful Accounts for $9,000