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
Muscle relaxant of choice in hepatic and renal failure: 
Select and explain. 
A. Cisatracurium, B. Rocuronium, C. Vecuronium, D. Rapacuronium
A: Cisatracurium
Answer: A: Cisatracurium 
Explanation: Cisatracurium