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
[{'content': "In a chronic alcoholic, Wernicke's encephalopathy can be prevented by: March 2013 (g) \nSelect and explain. \nA. I/V saline, B. Large amount of glucose, C. Imipramine, D. Thiamine supplement", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D i.e. Thiamine supplement', 'role': 'assistant'}]