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
[{'content': 'Arterial supply of tonsil is mainly: \nSelect and explain. \nA. Tonsillar branch of facial artery, B. Maxillary artery, C. Middle meningeal artery, D. Internal carotid artery', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (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.', 'role': 'assistant'}]