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': 'pANCA is sensitive and specified for? \nSelect and explain. \nA. Post streptococcal glomerulonephritis, B. Idiopathic cresentic glomerulonephritis, C. Diffuse glomerulosclerosis, D. Diffuse glomerulosclerosis', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Idiopathic cresentic glomerulonephritis", 'role': 'assistant'}]