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
True statement regarding 'Fistula in ano' is - 
Select and explain. 
A. Posterior fistulae have straight tracks, B. High fistulae can be operated with no fear of incontinence, C. High and low divisions are made in relation to the pelvic floor, D. Intersphincteric is the most common type
D: Intersphincteric is the most common type
Answer: D: Intersphincteric is the most common type 
Explanation: None