A Major Supermarket Provides "Instant" Coupons for Selected Products on a Shelf

A major supermarket provides "instant" coupons for selected products on a shelf location alongside the product. A coupon dispenser provides a coupon to each customer based upon the customer's pressing a button. A major advantage to this "instant" coupon over the traditional coupon format (in which consumers cut coupons in their home) is that

A) the face amount of the coupon can be changed to attract new customers to a product category.
B) coupons are not based on a consumer's purchases.
C) all consumers are eligible for savings due to coupons, not just coupon-cutters.
D) coupons are only distributed to price-sensitive consumers.