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
Wernicke-korsakoff syndrome is due to the deficiency of which of the following - 
Select and explain. 
A. Pyridoxine, B. Thiamine, C. Vitamine B12, D. Riboflavin
B: Thiamine
Answer: B: Thiamine 
Explanation: None