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: Anatomy
Posterior superior alveolar artery is branch of - 
Select and explain. 
A. Nasal branch of maxillary artery, B. Palatal branch of maxillary artery ., C. Mandibular artery, D. Inferior alveolar artery
B: Palatal branch of maxillary artery .
Answer: B: Palatal branch of maxillary artery . 
Explanation: None