Does a Subsidy to Buyers Affect the Supply Curve

Does a subsidy to buyers affect the supply curve?

A) Yes; the supply curve shifts up by the amount of the subsidy.
B) Yes; the supply curve shifts to the right by the amount of the subsidy.
C) No; the supply curve does not move, as quantity supplied increases instead.
D) No; the supply curve does not move, as quantity supplied decreases instead.