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 prefferd over atracurium due to advantage of - \nSelect and explain. \nA. Rapid onset, B. Sho duration of action, C. No histamine release, D. All', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. No histamine release', 'role': 'assistant'}]