What Was the Overall Importance of McCulloch V

Multiple Choice

What was the overall importance of McCulloch v.Maryland (1819) ?

A) The Court allowed Congress to use the necessary and proper clause to broadly interpret its delegated powers.
B) The Court gave a very restricted definition of Congress's delegated and implied powers.
C) The Court announced that dual federalism did not conform to the framers' design.
D) The Court declared that a national bank was unconstitutional.