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 retinal layer is most radioresistant: \nSelect and explain. \nA. RPE, B. Layer of rods and cones, C. Bipolar cell layer, D. Ganglion cell layer', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Layer of rods and cones', 'role': 'assistant'}]