This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
[{'content': "Sub coical dementia is seen in all except \nSelect and explain. \nA. Multiple sclerosis, B. Alzheimer's disease, C. Parkinson's disease, D. HIV related dementia", 'role': 'user'}, {'content': "Answer: B \nExplanation: People with these types of dementia usually have severe memory loss and can't remember words or understand language.Alzheimer's and Creutzfeldt-Jakob disease are two forms of coical dementia.Subcoical dementias happen because of problems in the pas of the brain beneath the coex. Ref ganong's review of medical physiology 25e p751", 'role': 'assistant'}]