Which of the Following Best Describes the Policy Ineffectiveness Proposition

Multiple Choice

Which of the following best describes the policy ineffectiveness proposition?

A) Monetary policy cannot change real GDP in a regular or predictable way.
B) Policymakers can be effective in changing real GDP only if people's expectations are correct.
C) Monetary policy can change real GDP only if the Fed pursues a consistent,stable growth rate of the real money supply.
D) Fiscal policy is totally ineffective in changing real GDP in both the short run and the long run.