What is the primary function of a stock keeping unit (SKU)?
A. An SKU represents a unique inventory item in a store.
B. An SKU tracks results from a clearance sale, such as, "buy one, get one free."
C. An SKU is a small tag attached to a product that tracks its movement through a store.
D. An SKU represents a bundle being offered.
E. An SKU is a special, seasonal discount offer.
Answer: A. An SKU represents a unique inventory item in a store.