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': 'A 2 year old child presented with leukocoria in the right eye since 2 months. On examination a total retinal detachment was present in the same eye. Ultrasound B scan revealed a heterogenous sub retinal mass with calcification. The most likely clinical diagnosis is – \nSelect and explain. \nA. Coats- disease, B. Retinoblastoma, C. Toxocariasis, D. Retinal tuberculoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Leukocoria with calcification in subretinal mass suggests the diagnosis of exophytic retinoblastoma.\nExophytic retinoblastoma can cause retinal detachment.', 'role': 'assistant'}]