This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': "All of the following are included in Jones major criteria except: \nSelect and explain. \nA. Lymphadenopathy, B. Polyarthritis, C. Sydenham's chorea, D. Pancarditis", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. A. LymphadenopathyJohns major criteria - Migratory flitting polyarthritis, Sydenham's chorea, pan carditis, subcutaneous nodules, erythema marginatum", 'role': 'assistant'}]