This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
[{'content': "True about Wegener's granulomatosis is \nSelect and explain. \nA. Large vessel vasculitis, B. Granulomas in GBM, C. Nephrosclerosis, D. Focal necrotizing GN", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Triad of WG: a. Acute necrotizing granulomas of respiratory tract b. Necrotizing or granulomatous vasculitis of small to medium-sized vessels c. Focal necrotizing often crescentic GN', 'role': 'assistant'}]