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': 'Angina & sycope in same patient is seen in \nSelect and explain. \nA. Aortic stenosis, B. MVP, C. MS, D. AR', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]