The Reason for Different Effects of an Anticipated Fiscal Policy

Multiple Choice

The reason for different effects of an anticipated fiscal policy on the full-employment output in the Keynesian and Classical models is

A) the Keynesian model assumes perfect insight,but the Classical model assumes rational expectations.
B) the Keynesian model assumes rational expectations,but the Classical model assumes perfect insight.
C) the Keynesian model assumes perfect insight,but the Classical model assumes rational
D) contrary to the Classical model,the Keynesian model assumes that policy has no wealth effect.