This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Psychiatry
[{'content': "Korsakoff's psychosis is seen in \nSelect and explain. \nA. Acute alcoholism, B. Carbon monoxide poisoning, C. Chronic alcoholism, D. Multiple sclerosis", 'role': 'user'}, {'content': "Answer: C \nExplanation: (C) Chronic alcoholism# Conditions resulting in the vitamin deficiency and its effects include chronic alcoholism and severe malnutrition.> Alcoholism may be an indicator of poor nutrition, which in addition to inflammation of the stomach lining, causes thiamine deficiency.> Other causes include dietary deficiencies, prolonged vomiting, eating disorders, or the effects of chemotherapy. It can also occur in pregnant women who have a form of extreme morning sickness known as hyperemesis gravid a rum. Mercury poisoning can also lead to Korsakoff's syndrome.> It has also been caused by centipede (mukade) bites in Japan.There is no specific treatment because the previous thiamine deficiency produces irreversible damage to the medial thalamic nuclei and mammillary bodies.> Mammillary body atrophy may be visible on high-resolution MRI.", 'role': 'assistant'}]