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': "Which of the following conditions are associated with pauci-immune crescenteric glomerulonephritis? \nSelect and explain. \nA. Henoch-schonlein nephritis, B. Lupus nephritis, C. Microscopic polyangitis, D. Alpo's syndrome", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Microscopic polyangitis", 'role': 'assistant'}]