Which of the Following Best Defines American Federalism

Multiple Choice

Which of the following best defines American federalism?

A) Some powers are reserved for the states, some powers are reserved for the central government, and some powers are shared by the states and the central government.
B) All powers are shared by the states and the central government, a system known as "checks and balances."
C) All powers are invested in the central government, which can then delegate powers to the states.
D) all of the above
E) none of the above