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': 'Dangerous area of eye: \nSelect and explain. \nA. Ciliary body, B. Optic nerve, C. Sclera, D. Choroid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Ciliary body', 'role': 'assistant'}]