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: Pharmacology
[{'content': 'All of the following are true about Aspirin except: \nSelect and explain. \nA. At low doses it acts as an antiplatelet drug, B. It irreverssibly inhibits the synthesis of Thromboxane, C. It is used to inhibit Niacin induced Flushing., D. It is a reversible inhibitor of COX', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Aspirin is an irreversible inhibitor of COX.', 'role': 'assistant'}]