Which of the following best explains why the supreme court case of mcculloch v. maryland is significant?
a. it clarified the meaning of the supremacy clause to say that states have no power to regulate interstate commerce.
b. it denied that the supremacy clause gave the national government the power to operate businesses within a state.
c. it identified a national bank as a legitimate implied power and said states could not tax the national government.
d. it interpreted the meaning of the commerce clause to say that state government could charter their own banks.