Both Studio X and Studio Y Produced Movies About Aliens

Multiple Choice

Both Studio X and Studio Y produced movies about aliens fighting famous superheroes. Studio Y's movie, Aliens vs. Heroman, came out on January 1st and Studio X's film, Martians and Warriors, premiered on March 1st. Yet despite the similarity in the titles and the subjects, it is unlikely that Studio X copied their ideas from Studio Y because both aliens and superheroes are common subjects for movies and many superhero and alien movies make a lot of money at the box office.
Which one of the following most accurately expresses the conclusion expressed above?

A) Studio X and Studio Y collaborate on their ideas for movies.
B) Both Studio X and Studio Y like to make movies based on popular characters.
C) Studio X's film premiered before Studio Y's film.
D) Despite the similarity of the films, Studio X and Studio Y both made blockbuster movies.
E) The films' similarity is most likely due to the fact that both aliens and superheroes are popular movie subjects that are lucrative to produce.