Identify the type of anticompetitive behavior illustrated by each of the following:

a. A university requires buyers of season tickets for its basketball games to buy season tickets for its football games as well.

b. Dairies that bid on contracts to supply milk to school districts collude to increase what they charge.

c. The same individual serves on the boards of directors of General Motors and Ford.

d. A large retailer sells merchandise below cost in certain regions to drive competitors out of business.

e. A producer of soft drinks sells to a retailer only if the retailer agrees not to buy from the producer's major competitor.