How does Article III of the Constitution describe the power of the Supreme Court?
A. Federal courts must use federal common law for state litigants in federal court.
B. Litigants involved in federal litigation may move their case from federal court to a local state court.
C. Litigants from different states may move their litigation from state court to federal court.
D. Federal courts must use the state law in question for state litigants in federal court.