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
[{'content': 'Neuromuscular blocking agent with duration of onset of action less than 2 minutes is \nSelect and explain. \nA. D-tubocuraine, B. Succinyl choline, C. Pancuronium, D. Gallamine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]