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': 'The most common systemic association of scleritis is: \nSelect and explain. \nA. Ehlers - Danlos syndrome, B. Disseminated systemic sclerosis, C. Rheumatiod ahritis, D. Giant cell aeritis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Rheumatiod ahritis Scleritis is a rare chronic granulomatous disorder characterised by fibrinoid necrosis, destruction of collagen, infiltration by inflammtory cells and vascular remodelling. It is usually a B/ L disease affecting females more than males.', 'role': 'assistant'}]