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
Hematoma formation is more frequent with 
Select and explain. 
A. Inferior alveolar nerve block, B. Posterior superior alveolar nerve block, C. Greater palatine nerve block, D. Infraorbital nerve block
B: Posterior superior alveolar nerve block
Answer: B: Posterior superior alveolar nerve block 
Explanation: None