Cooperative Federalism Is a Theory That ______

Cooperative federalism is a theory that ______.

A) was an accurate depiction of American federalism during the eighteenth century
B) defines state and national powers as interdependent, requiring the cooperation of each other to get things done
C) defines state and federal governments as essentially separate from each other and carrying out their functions independently
D) reflects the formal distribution of powers by the Constitution
E) is modeled after a layer cake