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
[{'content': 'The blood supply of tonsils is: \nSelect and explain. \nA. Lingual artery, B. Superior thyroid artery, C. Facial artery, D. Pharyngeal artery', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]