This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pathology
In Wegeners glomerulonephritis characteristic feature seen is 
Select and explain. 
A. Granuloma in the vessel wall, B. Focal necrotizing glomerulonephritis, C. Nodular glomerulosclerosis, D. Interstitial granuloma
B: Focal necrotizing glomerulonephritis
Answer: B: Focal necrotizing glomerulonephritis 
Explanation: This is a necrotising vasculitis characterised by specific triad . Granuloma of the lung and the upper respiratory tract . Vasculitis of small to medium sized vessels . Glomerulonephritis Robinns 9 th edition page no. 353