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
Which one of the following drugs is not a long acting neuromuscular blocking agent ? 
Select and explain. 
A. Doxacurium, B. Mivacurium, C. Pancuronium, D. Pipecuronium
B: Mivacurium
Answer: B: Mivacurium 
Explanation: None