This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Surgery
[{'content': 'Esthesio neuroblastoma arises from - \nSelect and explain. \nA. Olfactory N, B. Maxillary N, C. Ophthalmic N, D. Nasociliary N', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Esthesioneuroblastoma or olfactory neuroblastoma are uncommon highly malignant tumors, arising from the neuroendocrine cells in the olfactory mucosa. Ref : Osborn Neuroradiology 1/e p493', 'role': 'assistant'}]