American Federalism, According to the Constitution

American federalism, according to the Constitution,

A) reserves powers to the states that are not explicitly listed in the Constitution as powers of the national government.
B) reserves powers to the national government that are not explicitly listed in the Constitution as powers of the states.
C) does not limit the types of laws Congress can pass.
D) does not limit what the national government can do.
E) does not limit what presidents may do.