Suppose that inverse demand is given by D(Q) = 56 − 2Q, Q = q1 + q2 and the cost function is TC(qi ) = 20qi + f Find the Stackelberg equilibrium and compare it to the Cournot equilibrium. 6. Demand and costs are as given in the preceding question. (a) Find the limit output for fixed costs ( f ) equal to 50, 32, 18, and 2. (b) What is the SPNE for the entry game with the following timing: in the first-stage firm 1 can commit to its output; in the second stage firm 2 can enter and choose its output for fixed costs equal to 50, 32, 18, and 2?