In the Case of Marbury V

In the case of Marbury v. Madison, Chief Justice John Marshall made which two of the following critical points?

A) A law that contravenes the Constitution is void.
B) However, it is not the court's duty to declare a law that contravenes the Constitution as unconstitutional.
C) Even though a law may contravene the Constitution it is not void.
D) It is the court's particular duty to declare a law that contravenes the Constitution as unconstitutional.