This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': "Experimental Parkinson's disease in animals and humans is done by \nSelect and explain. \nA. MPTP, B. Methyl mercury, C. Rotenone, D. All of the above", 'role': 'user'}, {'content': 'Answer: D \nExplanation: (D) All of the above', 'role': 'assistant'}]