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: Pharmacology
[{'content': 'Drug of choice for the initial treatment of parkinsonism - \nSelect and explain. \nA. Levodopa, B. Benzhexol, C. Ropinirole, D. Selegeline', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Ropinirole o Dopamine agonist (Ropinirole, pramipexal, rotigotine) monotherapy is the initial treatment of choice. (But levodopa remains the most effective drug for Parkinson ism).", 'role': 'assistant'}]