Suppose That Many Coal Mines Are Shut for Environmental Reasons

Suppose that many coal mines are shut for environmental reasons.This will cause

A) an increase in the supply of coal (a rightward shift of the supply curve) .
B) a decrease in the supply of coal (a leftward shift of the supply curve) .
C) a movement up the supply curve.
D) a movement down the supply curve.
E) no change in the supply curve,only a change in price.