A Fast-Food Franchise Almost Continuously Offers Coupons That Are Redeemable

A fast-food franchise almost continuously offers coupons that are redeemable for a free soda when a customer purchases a hamburger and french fries. A long-run disadvantage of this strategy is that

A) customers may resist paying full prices when coupons are discontinued.
B) coupons only attract price-conscious consumers.
C) many coupon-oriented customers would purchase the meal without the coupon.
D) costs are not incurred if sales are not made.