Keynesian Economists Believe That Prices Are Sticky and Do Not

Keynesian economists believe that prices are sticky and do not adjust quickly,from which they concluded that

A) the long run deserves more focus than the short run.
B) savings is a crucial component of economic growth.
C) the most important determinant of economic growth is long-run aggregate supply.
D) government intervention is sometimes necessary to promote full employment.
E) government intervention is never necessary to promote full employment.