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200- B's best response 100- d A's best response 66.7- 50-- 50 100 200 66.7 The above figure shows the reaction functions for two pizza shops in a small isolated town. Firm B producing 100 pizzas and firm A producing 50 pizzas is not a Cournot equilibrium because O Cournot duopolists agree to share the market equally. O firm A is not on its best-response function. O neither firm is on its best-response function. O firm B is not on its best-response function