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
Most commonly used scalpel blade for intraoral surgery is: 
Select and explain. 
A. No.15, B. No.11, C. No.12, D. No.10
A: No.15
Answer: A: No.15 
Explanation: Most commonly used scalpel blade for intraoral surgery – No. 15
The blade used primarily for making small stab incisions, such as for incising an abscess – No. 11
Blade commonly used for skin incisions – No. 10 blade
The hooked blade commonly used for mucogingival procedures – No. 12 blade
The blades commonly used in gingivectomy – No. 11 and 12
The blade used for incising periodontal abscess – No. 12