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': "All of the following are known predisposing factors for Alzheimer's disease except : \nSelect and explain. \nA. Down-syndrome, B. Low education level, C. Smoking, D. Female sex", 'role': 'user'}, {'content': "Answer: C \nExplanation: Answer is C (Smoking):Smoking has not been mentioned as a risk factor, for Alzheimer's disease.", 'role': 'assistant'}]