If Expectations Are Rational, Can Monetary and Fiscal Policy Makers

Multiple Choice

If expectations are rational, can monetary and fiscal policy makers accurately control the effects their policies have on unemployment?

A) Yes, provided they announce policies in advance.
B) Yes, both policies are effective in altering unemployment in the desired ways.
C) No, because these effects depend on whether and to what extent people are fooled by those policies.
D) No, only fiscal policy can alter unemployment.
E) No, only monetary policy can alter unemployment.