4. [25 MARKS] Consider a market with one producer and two distributors competing with each other. Each distributor buys from the producer at a unit cost equals to h. The market price of the product equals to p = 100 – (9₁ +92), where q₁ is the quantity purchased from the distributor i = {1,2}. Producer receives h (marginal revenue) for each unit sold to distributors and has constant marginal cost of production equals to 5. Suppose that first the producer decides on the price h and then the distributors decide simultaneously on the quantity 9₁ and 92 which, respectively, they buy from the producer. (a) [15 MARKS] Calculate the best response function for each distributor for given price h. (b) [10 MARKS] Calculate the price h and the equilibrium quantity Q =q₁ +92 on this market.