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': 'Superior oblique causes all except ? \nSelect and explain. \nA. Intorsion, B. Elevation, C. Depression, D. Abduction', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Elevation", 'role': 'assistant'}]