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: Pediatrics
[{'content': 'Which of the following manifestation of rheumatic fever disappears completely ? \nSelect and explain. \nA. Carditis, B. Arthritis, C. Chorea, D. Subcutaneous nodules', 'role': 'user'}, {'content': 'Answer: B \nExplanation: There is no residual damage in the joint affected by rheumatic arthritis and there is complete resolution.', 'role': 'assistant'}]