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: Pediatrics
[{'content': 'Not included in modified Jones criteria? \nSelect and explain. \nA. Polyahalgia, B. Carditis, C. Chorea, D. Erythema marginatum', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Polyahalgia", 'role': 'assistant'}]