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': 'Wide pulse pressure is seen in \nSelect and explain. \nA. Beri beri, B. Cardiac tamponade, C. Diarrhea, D. Aortic  stenosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Wide pulse pressure is when SBP increases by more than 50%. It is seen in:\n\nAortic regurgitation\xa0\nPDA\nAnemia\nBeri beri\nHyperthyroidism\xa0\nFever\nComplete\xa0 heart block\nAV shunts', 'role': 'assistant'}]