Which of the Following Is the Best Definition of a "Nation

Which of the following is the best definition of a "nation"?

A) A definite territorial and political entity, with a population that identifies itself as a common group in juxtaposition to others.
B) A sovereign country recognized by the United Nations.
C) A sovereign country capable of its own self-determination.
D) A body of people, living in a territory, aware of its own aspirations for political autonomy.
E) A group of like-minded people, regardless of their physical location.