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. Radiation, C. Chemotherapy, D. Cyclophotocoagulation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Chemotherapy is now the first line of treatment of choice in most cases of bilateral retinoblastoma.\n\n"Chemotherapy is the most commonly employed therapeutic option for advanced bilateral retinoblastoma in\xa0most part of the world".\xa0\xa0—Clinical ophthalmology\n"Bilateral retinoblastoma is currently treated with initial chemotherapy".\xa0\xa0\xa0—Devita', 'role': 'assistant'}]