URGENT!!!ECON QUESTION

An important feature that distinguishes monopolistic competition from perfect condition is that

A. Monopolistic competitors sell a differentiated product rather than a homogeneous one.

B.the monopolistic competitor’s demand curve is the same as the market demand curve.

C.in long-run equilibrium, monopolistic competitors earn economic profits, whereas perfectly competitive firms do not.

D.there are important barriers to entry in monopolistic competition.