This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gynaecological diagnosis and operative surgery, Subject name: Gynaecology & Obstetrics
[{'content': 'For hysteroscopy, following are/is used \nSelect and explain. \nA. Distilled Water, B. Air, C. Glycine, D. O2', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Distending Media Uterine cavity is distended with a media to seperate the uterine walls and have a panoramic view during hysteroscopy CO2: Commonly used for diagnostic purposes. It is solouble in blood and is safe Glycine1.5%: Excellent visualisation, hyperosmolar Mannitol 5%+ Glycine 2.2% Normal saline D.C.DUTTA&;S TEXTBOOK OF GYNECOLOGY; 6th edition; Pg no:620', 'role': 'assistant'}]