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
Treatable causes of dementia are : 
Select and explain. 
A. Alzheimer's ds., B. Hypothyroidism, C. Multi-infarct dementia, D. All
B: Hypothyroidism
Answer: B: Hypothyroidism 
Explanation: B i.e. Hypothyroidism