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
Which of these is pierced during posterior superior alveolar nerve Block? 
Select and explain. 
A. Medial Pterygoid, B. Lateral Pterygoid, C. Buccinator, D. Masseter
C: Buccinator
Answer: C: Buccinator 
Explanation: None