Although L-DOPA Does Have Some Beneficial Effects, It Is Not

Multiple Choice

Although L-DOPA does have some beneficial effects, it is not a solution to the problem of Parkinson's disease because it

A) typically becomes less and less therapeutically effective with use.
B) is too expensive.
C) can be safely administered to only a small proportion of patients.
D) is unstable at room temperature.
E) does not pass through the blood-brain barrier.