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': 'Cause of exudative retinal detachment are all except \nSelect and explain. \nA. Scleritis, B. Toxaemia of pregnancy, C. Dysthyroid eye disease, D. Central serous retinopathy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Dysthyroid eye disease', 'role': 'assistant'}]