The discount column on the left-hand side of cash book represents a discount
Answer Details
In a cash book, the discount column on the left-hand side does not represent a discount. The purpose of this column is to record any discounts that are allowed to a debtor. When a debtor pays their outstanding debt earlier than the due date, the creditor may offer them a discount as an incentive for early payment. This discount is recorded in the discount column on the left side of the cash book.
Therefore, the correct answer is "allowed to a debtor."