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: Surgery
[{'content': 'Gas most suited for laproscopy is - \nSelect and explain. \nA. Air, B. Nitrogen, C. CO, D. Carbon dioxide', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is `d' i.e., Carbon dioxide", 'role': 'assistant'}]