The Video Rental Market Can Be Described as a Monopolistically

The video rental market can be described as a monopolistically competitive market. As a result of the economic profit earned by the first video rental outlets,

A) existing firms were able to successfully lobby the government for patent protection
B) competitors were attracted to the industry, and their entry reduced economic profit
C) demand dried up
D) Blockbuster saw an opportunity to take over the industry
E) competitors were discouraged from entering the industry