Consider a Cournot duopoly with the inverse demand P= 260-2Q. Firms 1 and 2 compete by simultaneously choosing their quantities. Both firms have constant marginal and average cost MC=AC = 20 . a. Find each firm’s best response function. b. Find the Cournot-Nash equilibrium quantities, profits and market price. c. Plot the best response curves and illustrate the equilibrium point. d. Suppose, instead, that firm 1 chooses first and 2 follows. Find the Stackelberg equilibrium quantities, profits and market price.