Refer to the Following Graph to Answer the Following Questions

Multiple Choice

Refer to the following graph to answer the following questions:

-In the long run,the demand curve for the monopolistically competitive firm would

A) shift leftward.
B) remain the same,causing the entry of new firms to be impossible.
C) shift rightward.
D) move closer to the marginal revenue curve,but the marginal revenue curve would be held constant.
E) shift rightward,causing the entry of new firms into the industry.