This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Muscle relaxants, Subject name: Anaesthesia
[{'content': 'Which of the following is the neuromuscular blocking agent with the shoest onset of action? \nSelect and explain. \nA. Mivacurium, B. Atracurium, C. Rapacuronium, D. Succinylcholine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Shoest acting non-depolarising skeletal muscle relaxant is Mivacurium Shoest acting depolarising muscle relaxant is Succinylcholine(Suxamethonium) .', 'role': 'assistant'}]