Situation 4-1 During the Winter of 1973-74, a General System

Situation 4-1 During the winter of 1973-74, a general system of wage and price controls (including a price ceiling on gasoline) was in force in the United States. At the beginning of 1974, some oil-producing countries imposed an oil embargo (a legal prohibition on commerce) on the West. In the spring of 1974, price controls were abolished.
Refer to Situation 4-1. Because price controls were in effect at the time the embargo occurred, an economist would have most likely predicted that

A) the number of dollars one would need to pay at the pump (legally) for a full tank of gasoline would increase sharply.
B) the number of dollars one would need to pay at the pump (legally) for a full tank of gasoline would decline sharply.
C) nonprice-rationing devices, such as long waiting lines and black markets, would appear.
D) a surplus of gasoline would result.