In the Context of Federal Court Jurisdiction, Which of the Following

In the context of federal court jurisdiction, which of the following is one of the criteria that qualify a case as a "diversity of citizenship" case?

A) The parties in the lawsuit must live in different states.
B) The parties must have standing to sue.
C) The accusation against the defendant must be of a criminal nature.
D) The amount in controversy must be less than $75,000.
E) The parties in the lawsuit must have been residents of the United States for at least three years.