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': 'A patient with bilirubin value of 8mg/dl and serum creatinine of 1.9 mg/dl is planned for surgery. What is the muscle relaxant of choice in this patient: \nSelect and explain. \nA. Vecuronium, B. Pancuronium, C. Atracurium, D. Rocuronium', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Atracurium', 'role': 'assistant'}]