If a company determines cost of goods sold each time a sale occurs it

A) must have a computer accounting system.
B) uses a combination of the perpetual and periodic inventory systems.
C) uses a periodic inventory system.
D) uses a perpetual inventory system.

Perpetual Inventory System

An inventory accounting system that records the sale or purchase of inventory immediately through the use of computerized point-of-sale systems and enterprise asset management software.

Sale Occurs

The point at which a transaction is recognized, involving the transfer of goods or services from a seller to a buyer for money.