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
A child presents with bladder exstrophy and chronic renal failure. The muscle relaxant of choice to be used during the surgery of exstrophy in this child is : 
Select and explain. 
A. Atracurium, B. Mivacurium, C. Pancuronium, D. Rocuronium
A: Atracurium
Answer: A: Atracurium 
Explanation: None