This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Which is a minor criteria for diagnosis of RF according to modified Jones criteria \nSelect and explain. \nA. ASO titre, B. Past history of rheumatic fever, C. Fever, D. Subcutaneous nodules', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref Harrison 19 th ed pg 2152 Table- 381-2 Minor manifestations Clinical: fever, polyahralgia Laboratory: elevated erythrocyte sed- imentation rate or leukocyte counte Electrocardiogram: prolonged P-R interval', 'role': 'assistant'}]