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: Surgery
[{'content': 'Urinary incontinence results from all except - \nSelect and explain. \nA. Neurogenic bladder, B. Vesico vaginal fistula, C. Ectopic ureter, D. Rectovesical fistula', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Rectovesical fistula doesn’t cause urinary incontinence, as the level of fistula is above the sphincter mechanism.', 'role': 'assistant'}]