The Movie You've Got Mail Features a Successful Small Bookstore

The movie You've Got Mail features a successful small bookstore competing with a new book superstore around the block.The big superstore offers deep discounts,while the small independent bookstore has better service and a more knowledgeable staff.The movie best illustrates which of the following?

A) For monopolistically competitive firms,profits will be positive in the long run.
B) Homogeneous products are produced by both firms because consumers perceive books from either store as the same.
C) Product differentiation occurs because consumers perceive the bookstores as different.
D) Monopoly production occurs because the movie is copyrighted.
E) Perfect competition occurs because many movie theaters are showing identical movies.