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: Medicine
[{'content': 'True about Rheumatic fever - \nSelect and explain. \nA. Chorea is aggravated during pregnancy, B. Chorea & arthritis co-existing, C. Subcutaneous nodules are tender, D. Erythema multiforme seen', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]