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': "Peripheral pulmonic stenosis is associated with -a) Subaortic stenosis b)  Takayasu's arteritisc) William syndromed) Coarctation of syndromee) Rubella \nSelect and explain. \nA. ce, B. b, C. ac, D. ae", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]