Two teams of scientists studying lung disease have each developed a new drug. Each team claims that its drug will greatly fight lung disease.

The two teams have agreed to join together to fight lung disease, but they only have enough money to continue developing one of the drugs. How do they decide which drug to continue developing?
A.
They should choose the drug that cost the most to develop—it will be more effective than the cheaper drug.
B.
It doesn't matter which drug they choose because they were both developed by scientists.
C.
They should evaluate all the current scientific evidence and develop the drug that is better at fighting lung disease.
D.
The drug that took longer to develop is better because the scientists worked harder to develop it.