A monopoly is operating at a quantity where the average total cost is $60, marginal revenue is $45, and the price is $70. If the monopoly has a normal U-shaped ATC curve and is currently producing at its efficient scale, then to maximize profits, this business should ____ prices and ____ the quantity produced. Select one: a. raise; lower cross out cross out b. lower; raise c. raise; raise cross out d. lower; lower cross out