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': 'All of the following drugs are eliminated by kidney except \nSelect and explain. \nA. Pancuronium bromide, B. Atracurium besylate, C. Vecuronium bromide, D. Pipecuronium', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Atracurium besylate', 'role': 'assistant'}]