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: Gynaecology & Obstetrics
[{'content': 'Gas commonly used in laparoscopy is : \nSelect and explain. \nA. Air, B. Pure 02, C. N20, D. CO2', 'role': 'user'}, {'content': 'Answer: D \nExplanation: CO2', 'role': 'assistant'}]