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': "All are associated with coarctation of aorta, except \nSelect and explain. \nA. Patent ductus arteriosus, B. Renal artery stenosis, C. Bicuspid aortic valve, D. Turner's syndrome", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]