As Long as the Supply Curve for a Good Is

As long as the supply curve for a good is upward- sloping and the demand curve is downward- sloping, a tax imposed on sellers shifts the supply curve

A) rightward and definitely decreases the equilibrium quantity.
B) leftward and definitely raises the equilibrium price.
C) rightward and possibly increases the equilibrium quantity.
D) leftward and possibly raises the equilibrium price.