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: Unknown
[{'content': 'The following is a feature of Korsakoff’s psychosis \nSelect and explain. \nA. Confabulation, B. Encephalopathy, C. Opthalmoplegia, D. Hallucination', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref. Oxford textbook of Psychiatry. Page. 28\n\xa0\nAnterograde amnesia is also observed in patients with Korsakoff syndrome.\n\nKorsakoff syndrome is seen mainly in alcoholics who have a thiamine deficiency and often follows an acute presentation of Wernicke encephalopathy.\nWernicke encephalopathy presents with ocular palsies, confusion, and gait ataxia and is also related to a thiamine deficiency.\nIn Wernicke-Korsakoff syndrome, lesions are always found in the mammillary bodies and the dorsomedial nuclei of the thalamus.\nIn addition to exhibiting an anterograde amnesia, Korsakoff patients also present with retrograde amnesia.\nThese patients confabulate, making up stories to replace past memories they can no longer retrieve.', 'role': 'assistant'}]