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': 'Reverse Coarctation is seen in \nSelect and explain. \nA. Giant cell arteritis, B. Takayasu arteritis, C. Polyarteritis nodosa, D. Microscopic polyangitis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Reverse Coarctation ;weak or absent pulse in upper limb + pulse present in lower limb.', 'role': 'assistant'}]