Which of the following statements is false?
a. For a price taker, P = MR, but for a price searcher, P > MR.
b. a monopoly firm's demand curve lies above its MR curve.
c. A single-price monopolist charges the same price for all units of its product
d. a perfect price-discriminating monopolist charges a different price for each unit of the good it sells.
e. A single-price monopolist charges a price that is equal to marginal cost at the quantity of output at which MR = MC