If the Government Imposed a Green Tax on Gasoline, the Amount

If the government imposed a green tax on gasoline, the amount of air pollution should

A) Increase as people begin to use public transportation more.
B) Increase as people begin to use alternative fuels instead of gasoline.
C) Decrease as people switch to larger cars to drive in the country where pollution is not a problem.
D) Decrease as people switch to more fuel-efficient cars.