A Taste of Greece, a restaurant chain that is known for its Extra Juicy Hero sandwich, wants to encourage repeat purchases and create customer loyalty. Which sales promotion should it employ?
A.
a two-for-the-price-of-one deal
B.
a coupon for a free soft drink with a Hero purchase
C.
a game with food prizes
D.
a trading stamp program, which allows buyers to earn free food after making a certain number of purchases
Answer: D