What Was the Principal Effect of Marbury V

What was the principal effect of Marbury v. Madison (1803) on the Supreme Court?

A) It gave the Court the ability to rule on whether laws violated the Constitution.
B) It expanded the Court's appellate jurisdiction.
C) It established the system of circuit courts to take some burden off of the Supreme Court.
D) It changed the original jurisdiction of the Court to hear matters in which state law conflicted with federal law.
E) It forced the creation of today's lower federal courts.