Answer:
a. Allowance method of accounting for bad debts
Step-by-step explanation:
This method reduce the amount of the account receivable balance by an estimation of how much of the account receivable will never be collected.
The entry to the accounting system will be a debit to Bad Debts Expense
and credit to Allowance for Doubtful Accounts.
When a debt is written-off the entry it's to credit Allowance for Doubtful Accounts then a debit to account receivable to recognize the loss.