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': 'Ideal treatment of B/L retinoblastoma: \nSelect and explain. \nA. Enucleation, B. Radiotherapy, C. Chemotherapy, D. Phototherapy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Enucleation', 'role': 'assistant'}]