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': 'Treatment of 13/1 retinoblastoma is \nSelect and explain. \nA. Chemotherapy, B. Enucleation, C. Radiotherapy, D. Cryo', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Chemotherapy', 'role': 'assistant'}]