Article I,Section 8 of the Constitution Specifically Gives Congress Authority

Article I,Section 8 of the Constitution specifically gives Congress authority to "regulate commerce with foreign nations." If Congress adopts legislation prohibiting the importation of ivory or other products made from elephants,Congress would be exercising which of the following powers?

A) Delegated powers
B) Reserved powers
C) Implied powers
D) Concurrent powers
E) Denied powers