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
Upper premolars are supplied by 
Select and explain. 
A. Anterior superior alveolar, B. Middle superior alveolar, C. Posterior superior alveolar, D. Inferior alveolar
B: Middle superior alveolar
Answer: B: Middle superior alveolar 
Explanation: None