-(Exhibit: Monopoly Through Collusion) the Exhibit Illustrates the Situation in an Industry

-(Exhibit: Monopoly Through Collusion) The exhibit illustrates the situation in an industry that consists of two firms facing identical demand curves; the demand curve for each firm is D₁. Which of the following assumptions is part of the analysis illustrated by the model?

A) The two firms have identical marginal cost but different average total cost.
B) The two firms sell differentiated products.
C) The MR curve is not relevant to either firm's choices.
D) If the firms cooperate by acting as a cartel, they can maximize their combined economic profit.