This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Organic mental disorders, Subject name: Psychiatry
[{'content': 'Not affected by Wernicke&;s disease \nSelect and explain. \nA. Hypothalamus, B. Thalamus, C. Hippocampus, D. Mamillary bodies', 'role': 'user'}, {'content': 'Answer: C \nExplanation: In Wernicke&;s disease, neuropathologically, neuronal degeneration and haemorrhage are seen in thalamus, hypothalamus, mammillary bodies and midbrain. Ref: A Sho Textbook of Psychiatry, Niraj Ahuja, 7th Edition, pg. no.38', 'role': 'assistant'}]