This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Pharmacology
[{'content': 'Drug of choice for drug induced parkinsonism: \nSelect and explain. \nA. Levodopa, B. Benserazide, C. Benzhexol, D. Selegiline', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C. BenzhexolDOC for parkinsonism is pramipexole, ropinirole. DOC for drug induced is benzhexol. Most effective drug is levodopa and carbidopa. Disease modifying drug is selegiline.', 'role': 'assistant'}]