The Figure Given Below Shows the Revenue and Cost Curves

Multiple Choice

The figure given below shows the revenue and cost curves of a firm. MC represents the marginal cost curve, AC the average cost curve, MR the marginal revenue curve, and AR the average revenue curve.Figure 9.4

-The characteristic that distinguishes a monopolistically competitive market from a perfectly competitive market is the:

A) ease of entry.
B) number of firms operating in the market.
C) degree of government regulation in the activities of the firms.
D) differentiation of products.
E) extent of market share of each firm.