This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Alcohol-Related Disorders, Subject name: Psychiatry
[{'content': "Wernicke Korsakoff's syndrome is due to the deficiency of which of the following (Repeat): \nSelect and explain. \nA. Pyridoxine, B. Thiamine, C. Vitamin B12, D. Riboflavin", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans: B (Thiamine) Ref: Synopsis of Psychiatry. Kaplan & Sadock, 10th editionExplanation:See 2010 Psychiatry question explanation.', 'role': 'assistant'}]