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: Unknown
[{'content': 'Major criteria for rheumatic fever are - \nSelect and explain. \nA. Carditis, B. Arthalgia, C. Fever, D. All of above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans- A Carditis', 'role': 'assistant'}]