Which of the following statements best captures the meaning of the concept of regulated federalism?
A. State governments regulate how much personal income tax revenue they send to the national government
B. In recent years the national government has created a large number of regulatory commissions primarily to monitor the policy performance of state governments
C. The national government sets standards of conduct or requires the states to set standards that meet national guidelines
D. The states act as watchdogs and regulate federal government grants-in-aid