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
Neuromuscular blocking agent with duration of onset of action less than 2 minutes is 
Select and explain. 
A. D-tubocuraine, B. Succinyl choline, C. Pancuronium, D. Gallamine
B: Succinyl choline
Answer: B: Succinyl choline 
Explanation: None