Which of the Following Is Not Necessary in Order for a Firm

Multiple Choice

Which of the following is not necessary in order for a firm to engage in price discrimination?

A) The producer must face an inelastic demand curve.
B) The producer must face a downward-sloping demand curve.
C) There must be at least two identifiable classes of consumers with different price elasticities of demand.
D) The producer must be able, at little cost, to distinguish between the different classes of buyers.
E) It must be impossible for one buyer to resell to another.