Suppose you are the manager of a watchmaking firm operating in a competitive market. Your cost of production is given by C = 400 + 2q-, where q is the level of output and C is total cost. (The marginal cost of production, MC(q), is 4q; the fixed cost, FC, is $400). If the price of a watch is $100, how many watches should you produce to maximize profits? You should produce watches. (Enter your response as an integer.)