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: Ans. is 'd' i.e., Rectovesical fistula