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: Anaesthesia
[{'content': 'Aspirin is stopped how many days prior to surgery \nSelect and explain. \nA. 7 days, B. 14 days, C. 24 hours, D. None', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Aspirin is not stopped.', 'role': 'assistant'}]