One Difference Between a Perfectly Competitive Market and a Monopolistically

Multiple Choice

One difference between a perfectly competitive market and a monopolistically competitive market is that

A) there are no barriers to entry in monopolistic competition.
B) there are no barriers to exit in monopolistic competition.
C) there is no product differentiation in perfect competition
D) there is no product differentiation in monopolistic competition
E) there is strategic interaction among firms in monopolistic competition.