This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pediatrics
[{'content': 'True about subcutaneous nodule in Rheumatic fever ________ \nSelect and explain. \nA. Non tender, B. Most common manifestation, C. Present on extensor surfaces, D. Associated with athritis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Subcutaneous nodule in RHD is seen in 3 to 20% cases,non tender,on bony prominence like elbow,shine,occiput ,mostly associated with carditis. Ref : Ghai essential of pediatrics, eighth edition ,p.no:436', 'role': 'assistant'}]