Which of the Following Statements About One-Way Exclusive-Dealing Arrangements Is

Which of the following statements about one-way exclusive-dealing arrangements is true?

A) Truly one-way arrangements are illegal.
B) They occur when a supplier offers a retailer unshared distribution of merchandise if the retailer agrees to do something in return for the manufacturer.
C) These agreements violate the Clayton Act if they substantially lessen competition.
D) The retailer does not agree to do anything in particular for the supplier.
E) They violate the Clayton Act if they tend to create a monopoly.