Drug a Is Capable of Reducing Most of the Symptoms

Multiple Choice

Drug A is capable of reducing most of the symptoms of depression in 60% of depressed patients at 40 milligrams per day, but more than 40 milligrams per day doesn't produce any greater effect.Drug B is capable of reducing most of the symptoms of depression in 70% of depressed patients at 100 milligrams per day, but more than 100 milligrams per day doesn't produce any greater effect.Drug C is capable of reducing most of the symptoms of depression in 60% of depressed patients at 40 milligrams per day, but more than 40 milligrams per day produces severe side effects.Which of these drugs has the greatest clinical efficacy?

A) Drug A
B) Drug B
C) Drug C
D) They're all equal in clinical efficacy