Panther Company's bookkeeper debited supplies expense for the cost of goods sold during that month. The bookkeeper discovered the error prior to closing the books. The correcting entry would include

Cost of Goods Sold Dr.

To Supplies Expense

Explanation:

The journal entry for cost of goods sold should've been:

Cost of goods sold A/C Dr.

To Purchases A/C

(Being cost of goods sold expense recorded)

The wrong entry passed has been:

Supplies expenses A/C Dr.

To Purchases A/C

The rectifying (correcting) journal entry should be:

Cost of Goods Sold A/c Dr.

To Supplies Expenses A/C

(Being rectification entry for cost of goods sold recorded)

Cost of goods sold is an expense and expenses should be debited.

At the same time, purchase being a nominal account, crediting it would reduce the purchases balance.

Supplies expense was wrongly debited so it has been credited to cancel out the effect.