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: Medicine
[{'content': 'Feature of microscopic polyangitis is- \nSelect and explain. \nA. IgG deposits in kidney, B. Bronchospasm, C. Renal involvement in 90% cases, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]