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': "Which of the following drug undergoes Hoffman's elimination \nSelect and explain. \nA. Atracurium, B. Pancuronium, C. Mivacurium, D. Vecuronium", 'role': 'user'}, {'content': "Answer: A \nExplanation: Atracurium undergoes Hoffman's elimination that is nonenzymatic spontaneous degradation and hence safe in patients with renal and hepatic insufficiency.", 'role': 'assistant'}]