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
The scalpel blade most commonly used for oral surgical procedures is: 
Select and explain. 
A. No: 22, B. No: 12, C. No: 11, D. No: 15
D: No: 15
Answer: D: No: 15 
Explanation: None