3. a. Dauna's Doorstops Inc. (DD) is a monopolist in the doorstop industry. Its cost is C = 100 - 5Q + Q?, and demand is Q = 27.5 - P/2. What price should DD set to maximize profit? What output level does the firm produce? How much profit and consumer surplus does DD generate? What would the price and output level be if DD acted like a competitive firm? What profit and consumer surplus would then be generated? What is the deadweight loss from monopoly power in part (a)? b. C