This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharynx, Subject name: ENT
Aerial supply of tonsil is mainly by? 
Select and explain. 
A. Tonsillar branch of facial aery, B. Maxillary aery, C. Middle meningeal aery, D. External carotid aery
A: Tonsillar branch of facial aery
Answer: A: Tonsillar branch of facial aery 
Explanation: The tonsil is supplied by five aeries : 1. Tonsillar branch of the facial aery. This is the main aery. 2. Ascending pharyngeal aery from external carotid. 3. Ascending palatine, a branch of the facial aery. 4. Dorsal lingual branches of the lingual aery. 5. Descending palatine branch of the maxillary aery. (Ref: Diseases of ear, nose and throat and head and neck surgery, PL Dhingra 7th edition, Pg no. 291)