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
Best surgery for grade IV hemorroids 
Select and explain. 
A. Open hemorroidectomy, B. Sclerotherapy, C. Ligation of artery, D. Stapled hemorroidopexy
D: Stapled hemorroidopexy
Answer: D: Stapled hemorroidopexy 
Explanation: Stapled hemorroidopexy is surgery of choice for grade IV hemorrhoids.