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': 'All of the following are the causes of exudative retinal detachment except: \nSelect and explain. \nA. Retinopathy of toxaemia of pregnancy, B. Retinopathy of prematurity, C. Exudative retinopathy of Coats, D. Sympathetic ophthalmia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Retinopathy of prematurity', 'role': 'assistant'}]