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
Urinary incontinence results from all except - 
Select and explain. 
A. Neurogenic bladder, B. Vesico vaginal fistula, C. Ectopic ureter, D. Rectovesical fistula
D: Rectovesical fistula
Answer: D: Rectovesical fistula 
Explanation: Rectovesical fistula doesn’t cause urinary incontinence, as the level of fistula is above the sphincter mechanism.