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': 'Not included in modified Jones criteria- \nSelect and explain. \nA. Prolonged QRS interval, B. Carditis, C. Chorea, D. Erythema marginatum', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]