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': 'Shoest acting non depolarizing muscle relaxant \nSelect and explain. \nA. Mivacurium, B. Vercuromium, C. Atracurium, D. Succinyl choline', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Non depolarising (competitive) 1)Long Acting - pancuronium,pipecuronium 2) Intermediate Acting-vecuronium,rocuronium,atracurium 3) Sho Acting - Mivacurium', 'role': 'assistant'}]