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': "Main vascular supply of Little's area is all,except - \nSelect and explain. \nA. Septal branch of superior labial artery, B. Nasal branch of sphenopalatine artery, C. Anterior ethmoidal artery, D. Palatal branch of sphenopalatine", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]