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': 'Cholinesterase metabolizes following except: \nSelect and explain. \nA. Propanolol, B. Procaine, C. Acetyl choline, D. Bupivacaine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Bupivacaine', 'role': 'assistant'}]