This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Stroke and TIA, Subject name: Medicine
[{'content': 'Diencephalic pupils are due to damage to? \nSelect and explain. \nA. Superior colliculus, B. Lateral geniculate body, C. Optic pathway, D. Hypothalamus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Diencephalic pupils are a result of bilateral hemispheric dysfunction and are small. Damage occurs at the hypothalamus and will lead to damage to the origin of sympathetic fibers which will lead to small but reactive pupils. -Mid-position (4-7mm) non-reactive pupils are a result from direct midbrain (tectal region) damage.', 'role': 'assistant'}]