States' Rights and the Division of Powers

In Mulloch v. Maryland (1819), a bank manager refused to pay an unfair state tax on a federal bank. He was convicted in Maryland, but the supreme court reversed the decision. It ruled that the state tax would have had the effect of making state law superior to the federal government. This ruling is an example of which clause in the Constitution?
a. Necessary and Proper Clause
b. Supremacy Clause
c. Expressed Powers Clause
d. Federal Clause

I'm a little confused. I think it is B., but there is a strong possibility I am wrong. Help is definitely appreciated!

6 answers

I agree with B.
Okay, can you explain it to me? Sorry I am just really confused.
This site explains the Supremacy Clause.

https://www.law.cornell.edu/wex/supremacy_clause
Okay thanks!!
You're welcome.
B was the correct answer, thanks!