Suppose two firms engage in simultaneous quantity competition. Both firms have Omarginal cost. Firm A: P(Q)= 24-Q Firm B: P(Q)= 24-2Q suppose that the market can potentially change from demand A to demandB. Specifically the market starts out with demand A. If the market demandis A, then with probability 1/2 the demand remains at A in the next period.With complementary (1/2) probability, the market reverts to demand B. In thiscase the demand remains at B in every subsequent period. Each period the firmsobserve the current demand and choose quantity simultaneously. Firms maximizeexpected discounted profit.1) Calculate the required discount factor to sustain cooperation.