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': '"Pauci immune" glomerulonephritis is seen in: \nSelect and explain. \nA. After transplant in Alpos, B. Microscopic polyangitis, C. Henoch-Schonlein nephritis, D. Lupus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Microscopic polyangitis', 'role': 'assistant'}]