The Principal Impact of McCulloch V. Maryland Was

The principal impact of McCulloch v. Maryland was:

A) its decision to interpret the commerce clause broadly, thus giving the national government the ability to become involved in many more policy areas.
B) its decision to let states interfere in the federal government's business by taxing it.
C) its ruling that the national government's power to print money did not imply that it could open a bank for regulating the economy.
D) its expansive interpretation of implied powers and the supremacy clause in favor of the national government.
E) its decision to allow states to nullify federal laws that conflicted with their state constitutions.