This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pediatrics
[{'content': 'Major criteria for rheumatic fever are \nSelect and explain. \nA. Carditis, B. Ahalgia, C. Fever, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Carditis is a major criteria for Rheumatic fever. Ghai essential of pediatrics, eighth edition, p.no:434', 'role': 'assistant'}]