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': 'Nasal mucosa is supplied by - \nSelect and explain. \nA. Only external carotid artery, B. Only internal carotid artery, C. Mainly external carotid artery, D. Mainly internal carotid artery', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Both internal carotid artery and external carotid artery supply the nose but main artery is the external carotid artery.', 'role': 'assistant'}]