Which of the following statements about American federalism is true?

A. Constitutionally, the federal system of the United States consists of only the national government and the 50 states.
B. Dual federalism is also known as "marble-cake" federalism.
C. New federalism is defined as a strong national government that only allows the states to act when it decides to do so.
D. Permissive federalism is sometimes characterized as part of the devolution revolution.
E. Federalism is a constitutional arrangement that concentrates power in a central government.

A