4. The sole distributor of a product faces the inverse demand curve p = a b(). It takes the wholesale price m charged by the monopoly manufacturer of the product as given and has no other costs. (a) (6 points) What retail price p does the distributor set? (b) (6 points) What wholesale price m does the manufacturer set, if it has constant marginal costs ? () (6 points) What retail price p and wholesale price m does the manufacturer set if it is able to dictate the distributor's retail price? (d) (6 points) Compare the manufacturer's profits in both cases. Explain your findings