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': 'Muscle which makes the angle of 51° to optical axis \nSelect and explain. \nA. Superior rectus, B. Superior oblique, C. Inferior rectus, D. All the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Obliques makes an angle of 51°\xa0to optical axis.', 'role': 'assistant'}]