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': "A girl child came with complaints of involuntary movements was diagnosed as a case of Syndenham's chorea, suggestive of a diagnosis of acute rheumatic fever. There is no complaint of carditis or ahritis. Throat culture is negative. Which of the following will most likely suggest recent streptococcal infection? \nSelect and explain. \nA. ASLO, B. Antistreptolysin S, C. PCR for M protein, D. Anti-hyaluronidase", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. ASLO', 'role': 'assistant'}]