Pancake House,a Local Breakfast Diner,issues "Frequent Buyer" Cards to Its

Multiple Choice

Pancake House,a local breakfast diner,issues "frequent buyer" cards to its customers and stamps the card each time a customer buys a stack of pancakes.Pancake House promises to give any customer a free stack of pancakes if the customer buys 10 stacks of pancakes and has his "frequent buyer" card stamped 10 times.This is an example of a(n) ________ contract.

A) executed
B) illegal
C) unilateral
D) bilateral