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': 'Source of epistaxis after ligation of external carotid artery is - \nSelect and explain. \nA. Maxillary artery, B. Greater palatine artery, C. Superior labial artery, D. Ethmoidal artery', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Nose is Supplied by', 'role': 'assistant'}]