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 aery is branch of 
Select and explain. 
A. Nasal branch of maxillary aery, B. Palatal branch of maxillary aery, C. Mandibular aery, D. Inferior alveolar aery
B: Palatal branch of maxillary aery
Answer: B: Palatal branch of maxillary aery 
Explanation: B i.e. Palatal branch of maxillary aery