Which of the Following Are Necessary Conditions for Successful Price

Multiple Choice

Which of the following are necessary conditions for successful price discrimination?
A.zero transactions costs
B.a perfectly competitive market structure
C.an imperfectly competitive market structure
D.at least two different markets with different price elasticities of demand
E.at least two different markets with different price elasticities of supply

A) a, b, and d only
B) c and d only
C) a, c, d, and e only
D) a and c only