How is game theory used in economics? In economics, A. the rules of the game include laws that a firm must obey, a strategy is a firm maximizing profits, and the payoffs are output levels. B. the rules of the game include a firm's production function, a strategy is a firm's actions to achieve a goal, and the payoffs are profits C, the rules of the game include matters beyond a firm's control, a strategy is a firm maximizing profits, and the payoffs are the cost of production. OD, the rules of the game include technology, a strategy is the firm, and the payoffs are profits. OE, the rules of the game include technology, a strategy is the government, and the payoffs are the cost of production