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: Anaesthesia
[{'content': 'Cis atracurium is preferred over atracurium due to advantage of – \nSelect and explain. \nA. Rapid onset, B. Short duration of action, C. No histamine release, D. Less cardiodepressant', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Most important advantage of cisatracurium is that it does not provoke histamine release, therefore it is preferred over atracurium.\nOnset of action is similar for both atracurium and cisatracurium, and cis-atracurim has longer duration of action.', 'role': 'assistant'}]