This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Retina, Subject name: Ophthalmology
[{'content': 'Resse Ellsworth classification is for which of the following conditions \nSelect and explain. \nA. Hypertensive retinopathy, B. Optic nerve glioma, C. Retinoblastoma, D. Choroidal melanoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Retinoblastoma style="font-size: 1.04761904761905em; font-family: Times New Roman, Times, serif">Ref: ; Retina by Ryan, 5/e, p. 2114In the 1950\'s, the Reese-Ellsworth classification system was developed to predict the prognosis after treatment with radiation, but in 1990 the focus shifted from EBRT to chemotherapy and the classification followed now is ICRB).', 'role': 'assistant'}]