If a monopolistic firm (price searcher) can sell 9 units at a price of $100 each but must reduce its… Show more If a monopolistic firm (price searcher) can sell 9 units at a price of $100 each but must reduce its price to $80 in order to sell 10 units, then A Demand is inelastic and marginal revenue is negative B Marginal revenue is falling but is above price C Demand is elastic and marginal revenue is positive D $100 is the optimal price • Show less