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: Ophthalmology
[{'content': 'III nerve palsy with pupillary sparing is seen in- \nSelect and explain. \nA. Craniopharyngioma, B. Hypertension, C. Aneurysm of post. communicating artery, D. DM', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Infarction of occulomotor nerve in the orbit e.g. in diabetes, giant cell arteritis can cause 3rd nerve palsy with pupillaiy sparing.', 'role': 'assistant'}]