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': "Arrange the following structure of Angle of Anterior chamber in the order of inside to outside\n 1 - Ciliary body band\n 2 - Trabecular meshwork\n 3 - Schwalbe's line\n 4 - Root of lris\n 5 - Scleral spur \nSelect and explain. \nA. 4 - 5 - 1 - 2 - 3, B. 4 - 1 - 5 - 3 - 2, C. 4 - 1 - 5 - 2 -3, D. 4 - 1 - 2 - 5 - 3", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]