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: Medicine
[{'content': 'The most common cause of dementia is \nSelect and explain. \nA. Fronto-Temporal dementia, B. Senile dementia, C. Multi-infarct dementia, D. Alzheimer’s disease', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Causes of Dementia:\xa0\n\nAlzheimer’s\xa0 (most common in >65 years old)\nVascular dementia/Multi-infarct dementia\nLewy body dementia\nFronto-Temporal dementia (50-70 years)\nHuntington’s\nTraumatic/Dementia pugilistica\nCreutzfeldt-Jakob disease\n\n\xa0\nReversible causes of Dementia\n\nStructural brain lesions:- Normal Pressure Hydrocephalus, SubDural Hematoma, Brain Tumors\nAlcohol dementia/ Wernicke’s encephalopathy\nVitamin B12 deficiency\nEndocrine:- Hypo/Hyper-thyroidism, Hypo-Parathyroidism\nMetabolic disorders:- Dyselectrolytemia (Na, Ca, K), hepatic or renal failure\nAutoimmune:- Hashimoto’s paraneoplastic encephalopathy (anti- Yo, Hu, Ri)\nInfections:- Whipple’s, Lyme disease, Syphilis, HIV dementia.', 'role': 'assistant'}]