The Change in Price That Results from a Leftward Shift

The change in price that results from a leftward shift of the supply curve will be greater if

A) the demand curve is relatively steep than if the demand curve is relatively flat.
B) the demand curve is relatively flat than if the demand curve is relatively steep.
C) the demand curve is horizontal than if the demand curve is vertical.
D) the demand curve is horizontal than if the demand curve is downward sloping.