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': 'All except one explains complicated vesicovaginal fistula \nSelect and explain. \nA. Shortened vaginal length, B. Prior radiation therapy, C. Located near the cuff, D. Size > 3 cm', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Complicated vesicovaginal fistula is located distant from cuff.', 'role': 'assistant'}]