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': 'Position of the patient should be as described except: \nSelect and explain. \nA. Diagnostic laparoscopy - Trendelenburg with about 30° tilt, B. Colposcopy -Lithotomy, C. Transvaginal sonography in gynecology - Lithotomy with full bladder, D. Hysteroscopy - Lithotomy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: As the position described in the question are correct with respect to the surgery except for TVS.\nIn TVS, the position is dorsal with legs drawn up and not lithotomy Full bladder may or may not be required.', 'role': 'assistant'}]