Does a Subsidy to Buyers Affect the Demand Curve

Does a subsidy to buyers affect the demand curve?

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