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: Pathology
[{'content': 'Which of the following is not a component of Jones criteria for diagnosing acute rheumatic fever: March 2008 \nSelect and explain. \nA. Pancarditis, B. Migratory polyahritis, C. Erythema nodosum, D. Sydenham chorea', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: Erythema nodosum', 'role': 'assistant'}]