This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tonsils, Subject name: ENT
Arterial supply of tonsil is mainly: 
Select and explain. 
A. Tonsillar branch of facial artery, B. Maxillary artery, C. Middle meningeal artery, D. Internal carotid artery
A: Tonsillar branch of facial artery
Answer: A: Tonsillar branch of facial artery 
Explanation: (a) Tonsillar branch of facial artery(Ref. Scott Brown, 8th ed., Vol 3; 742)The arterial supply to tonsil is by external carotid artery branches.Maxillary artery also supplies the tonsil but the main artery supplying is the tonsillar branch of facial.Middle meningeal artery, a branch of maxillary artery, does not supply the tonsil.