Answer: decrease the creditor's account balance and be posted to the debit
Explanation:
Allowances are reductions in the money owed to creditors and they include things like sales returns or sales discounts. When recorded, they should therefore reduce the amount in the creditor's account to show that less cash is owed to the creditor.
As Creditor accounts are liabilities, they are credited when they increase and debited when they decrease. They will therefore have to be debited in this instance.
