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: Microbiology
[{'content': 'Streptococcal glomerulonephritis is best diagnosed by: \nSelect and explain. \nA. ASO titre, B. Anti DNAse, C. Hyaluronidase, D. Culture', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In streptococcal glomerulonephritis, ASO titre is often low. So, retrospective diagnosis is made by anti DNAase and antihyaluronidase.', 'role': 'assistant'}]