Which of the Following Is Not a Necessary Condition for Price

Multiple Choice

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

A) The firm must be a price maker.
B) The firm must be able to distinguish between customers.
C) The firm must be able to prevent resale between customers.
D) The firm must be able to product homogenous products.
E) The firm must be facing a downward-sloping demand curve.