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 of the following conditions are associated with an early systolic murmur, EXCEPT: \nSelect and explain. \nA. Aoic stenosis, B. Tricuspid regurgitation, C. Papillary muscle dysfunction, D. Small ventricular septal defect', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Aoic stenosis', 'role': 'assistant'}]