Why Is the Supreme Court Case of Marbury V

Why is the Supreme Court case of Marbury v.Madison important?

A) In this case, the Court declared the authority of Congress to regulate the economy of the United States.
B) In this case, the Court nationalized the Bill of Rights.
C) In this case, the Court authorized itself to exercise judicial review over laws passed by Congress.
D) In this case, the Court declared the secession of the Confederate states to be in violation of the Constitution.
E) In this case, the Court declared the segregation of schools based on race illegal.