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: Pathology
[{'content': "In Wegner's glomerulonephritis, the characteristic features seen in: \nSelect and explain. \nA. Focal necrotizing glomerulonephritis, B. Granulomas in the vessels wall, C. Interstital granulomas, D. Nodular glomerulosclerosis", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Granulomas in the vessels wall', 'role': 'assistant'}]