what is the relationship between a monopolist's demand curve and its marginal revenue curve? a. a monopolist's marginal revenue curve lies below its demand curve, because to sell more output, a monopoly must lower price b. a monopolist's marginal revenue curve has twice the slope of its demand curve due to constant returns to scale c. a monopolist's demand curve is downward sloping and its marginal revenue curve is upward sloping d. a monopolist's demand curve is the same as its marginal revenue curve
