This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': 'Wide pulse pressure is seen in all except: \nSelect and explain. \nA. PDA, B. Aoic stenosis, C. Aoic Regurgitation, D. A.V. malformation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Aoic Stenosis is associated with a narrow pulse pressure. Patent Ductus Aeriosus (PDA), Aoic Regurgitation and AV Malformations (Aeriovenous shunting) are all associated with a wide pulse pressure. REF: Harrison book of internal medicine 21ST EDITION', 'role': 'assistant'}]