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': 'Which muscle is intorter of eye - \nSelect and explain. \nA. Inferior oblique, B. Inferior rectus, C. Superior rectus, D. Medial rectus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The action of extraocular muscles can be summarized as follows -\n\n\nAll the recti muscles are adductor except lateral rectus which is abductor.\nBoth oblique muscles are abductors\nBoth the superior muscles (superior oblique and superior rectus) are intortors.\nBoth the inferior muscles (Inferior oblique and inferior rectus) are extorters.', 'role': 'assistant'}]