Which of the following is true regarding federal jurisdiction?

A) There is no exclusive federal jurisdiction in civil matters.
B) If a case falls within federal jurisdiction, it cannot fall within state jurisdiction.
C) Some cases fall within both federal jurisdiction and state jurisdiction, but there is no exclusive federal court jurisdiction.
D) Some cases fall within both federal jurisdiction and state jurisdiction, but that only occurs in criminal matters.
E) Some cases fall within both federal jurisdiction and state jurisdiction, but the federal court system has exclusive jurisdiction over some cases.