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
The drug inactivated in plasma by spontaneous non–enzymatic degradation is : 
Select and explain. 
A. Atracurium, B. Vecuronium, C. Pipecuronium, D. Pancuronium
A: Atracurium
Answer: A: Atracurium 
Explanation: None