The Cost of Producing Aspirin Increases Simultaneously as Doctors Find

The cost of producing aspirin increases simultaneously as doctors find that one aspirin per day reduces the risk of heart attacks. The supply of aspirin and the demand for aspirin
So that the equilibrium price of aspirin _ .

A) decreases; increases; might rise, fall, or stay the same
B) increases; increases; rises
C) increases; decreases; might rise, fall, or stay the same
D) decreases; increases; rises