Given the task definition and input, reply with output. In this task, you are given an impractical statement. You are also given three reasons (associated with "A", "B", "C") explaining why this statement doesn't make sense. You must choose the most corresponding reason explaining why this statement doesn't make sense.

The doctor prescribed him penicillin to fight back his enemy
(A) The penicillin is made by person working in factories
(B)The penicillin is not used to deal with person
(C)The penicillin is used for curing a person's disease
B