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 chronic alcoholic, loss of memory & confabulation is due to - \nSelect and explain. \nA. Wernick's encephalopathy, B. Korsakoff's psychosis, C. Alcoholic hallucination, D. Delirium tremens", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]