s] Consider a Cournot competition model with three firms. All firms have the same cost cost function C(qj ) = 30qj . The market demand is given by P(q1, q2, q3) = 300 q1 q2 q3. (a) Find the firms best response functions. (b) Perform three rounds of iterated dominance. (c) Which actions are rationalizable in this game?