The Allowance for Bad Debts has a credit balance of $3,000 at the end of the year before adjustment, and a "percent of sales" estimate indicates there are accounts that are uncollectible of $9,000. Which of the following adjusting entries would correctly record the adjustment to Allowance for Bad Debts? O no adjustment is required for the allowance method debit Bad Debt Expense, $12,000; credit Allowance for Bad Debts, $12,000 debit Bad Debt Expense, $9,000; credit Allowance for Bad Debts, $9,000 debit Allowance for Bad Debts, $9,000; credit Bad Debt Expense, $9,000