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': 'True about the device shown below is all except \nSelect and explain. \nA. Used for vaginal brachy therapy after surgery for uterine cancer., B. This treatment decreases risk of vaginal cuff recurrence., C. Indicated for only large tumor volumes., D. It is placed in proximal vagina.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Typical cylinder (Ovoid) used for brachy therapy\nBrachy therapy is indicated for only small tumor volumes.', 'role': 'assistant'}]