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
Cis atracurium is preferred over atracurium due to advantage of – 
Select and explain. 
A. Rapid onset, B. Short duration of action, C. No histamine release, D. Less cardiodepressant
C: No histamine release
Answer: C: No histamine release 
Explanation: Most important advantage of cisatracurium is that it does not provoke histamine release, therefore it is preferred over atracurium.
Onset of action is similar for both atracurium and cisatracurium, and cis-atracurim has longer duration of action.