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': 'Aspirin in low doses produces long lasting inhibition of platelet cyclooxygenase because : \nSelect and explain. \nA. Platelet contain low quantity of COX, B. Platelets cannot synthesize fresh COX molecules, C. Platelets bind aspirin with high affinity, D. Platelet COX is inducible', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]