Many Observers Feel That Price Controls Imposed During World War

Many observers feel that price controls imposed during World War II were generally more effective than those imposed in the 1970s because

A) there was more effective government enforcement.
B) the price ceilings were set below market equilibrium prices.
C) those imposed during the war tended to be more flexible than those in the 1970s.
D) they had the moral support of U.S. consumers.
E) the price freezes of the 1970s were short-run rather than long-run controls.