If a Federal Gasoline Tax of $1 Per Gallon Goes

If a federal gasoline tax of $1 per gallon goes into effect,in an attempt to promote conservation of energy,the result would be to

A) increase both equilibrium price and quantity for gasoline.
B) decrease both equilibrium price and quantity for gasoline.
C) increase the equilibrium price and decrease the equilibrium quantity for gasoline.
D) decrease the equilibrium price and decrease the equilibrium quantity for gasoline.