For the next five questions, consider a monopolist. Suppose the monopolist faces the following demand curve: P = 180 - 4Q. Marginal cost of production is constant and equal to $20, and there are no fixed costs. What is the monopolist's profit maximizing level of output? O Q = 45 O Q = 40 O Q = 30 O Q= 20 O Q = 10 O none of the above