Which of the Following Is Not a Necessary Condition for Effective

Multiple Choice

Which of the following is not a necessary condition for effective price discrimination?

A) The firm must face a downward-sloping demand curve.
B) There must be at least two distinguishable groups of consumers.
C) The producer must be a pure monopolist.
D) The seller must be able to prohibit buyers from easily reselling the product to other potential buyers.