This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Parkinsonism is induced by all drugs except - 
Select and explain. 
A. Reserpine, B. Metaclopramide, C. Chlorpromazine, D. Amantadine
D: Amantadine
Answer: D: Amantadine 
Explanation: None