Suppose That Many Coal Mines Are Shut for Environmental Reasons

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

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