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: Psychiatry
[{'content': "Following are predispositions to Alzhiemer's desease except : \nSelect and explain. \nA. Down's syndrome, B. Down's syndrome, C. Smoking, D. Low education group", 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Smoking', 'role': 'assistant'}]