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 of the following extraocular muscle has sympathetic innervation: \nSelect and explain. \nA. Levator palpebrae superioris, B. Muller's muscle, C. Superior rectus, D. Inferior rectus", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. Muller's muscle", 'role': 'assistant'}]