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
Which of the following extraocular muscle has sympathetic innervation: 
Select and explain. 
A. Levator palpebrae superioris, B. Muller's muscle, C. Superior rectus, D. Inferior rectus
B: Muller's muscle
Answer: B: Muller's muscle 
Explanation: Ans. Muller's muscle