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
Nasal mucosa is supplied by - 
Select and explain. 
A. Only external carotid artery, B. Only internal carotid artery, C. Mainly external carotid artery, D. Mainly internal carotid artery
C: Mainly external carotid artery
Answer: C: Mainly external carotid artery 
Explanation: Both internal carotid artery and external carotid artery supply the nose but main artery is the external carotid artery.