Which science fiction premise is the best example of dystopia?

A. In order to prevent young people from feeling the pain of heartbreak, the government outlaws love in anyone under age 18.

B. In order to make learning easier, teachers and engineers create interactive video game that can teach students everything they need to know.

C. In order to make life more exciting, scientists invent an eye computer that can bring nonstop entertainment directly to people's visual fields.

D. In order to overcome overpopulation on Earth, people build a large fleet of spaceships and set out to colonize the Milky Way galaxy.