Which of these situations is not an example of price discrimination?
(A)Brent works nights, so he chooses to buy bread at 7 a.m. rather than at 7 p.m. (B)Bob and Nancy each receive a "$1 off" coupon in the mail, but Bob redeems it while Nancy does not. (C)Katie buys 12 Cokes for $3, and Josh buys one Coke at a time for $1. (D)Velma likes to go to the movies at the lower afternoon matinee price, and Rosemary would rather pay more for the evening show.
A