This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anesthesia, Subject name: Pharmacology
[{'content': 'Muscle relaxant of choice in liver disease is \nSelect and explain. \nA. Atracurium, B. Pipecuronium, C. Rocuronium, D. Vecuronium', 'role': 'user'}, {'content': "Answer: A \nExplanation: Refer Katzung 11/e p456 Atracurium and cis-Atracurium are degraded spontaneously by Hoffman's elimination These don't require liver or kidney for elimination and thus are muscle relaxant of choice in a patient with renal and hepatic dysfunction", 'role': 'assistant'}]