The practice of selling the same goods to different customers at different prices, but with the same marginal cost, is known as

A ________ can price discriminate if, in part, it ________

A) natural monopoly; is the only seller of a good or service B) monopoly; can prevent resales of its product C) monopoly; is the only seller of a good or service D) perfectly competitive firm; can sell goods at a lower price than a monopoly E) perfectly competitive firm; changes from a price taker to a price maker

One example of Ricardian rent is:

a. rent paid to landlords under price controls. b. the difference between the price of a highly demanded unique piece of artwork and the opportunity cost of maintaining it. c. the amount paid to a seller above the equilibrium price of tourist class tickets in order to receive higher quality seats in first class. d. the price rise of wool from a disease among sheep.