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: ENT
[{'content': 'Most common source of hemorrhage during Tonsillectomy \nSelect and explain. \nA. Injury to external palatine vein, B. Injury to tonsillar branch of facial artery, C. Injury to tonsillar branch of Ascending pharyngeal artery, D. Injury to tonsillar branch of Lingual artery', 'role': 'user'}, {'content': 'Answer: A \nExplanation: M/c cause of hemorrhage during tonsillectomy is external palatine vein / paratonsillar vein.\nM/c cause of hemorrhage of arterial origin during tonsillectomy is tonsillar branch of facial artery.', 'role': 'assistant'}]