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': 'Pain sensations from the ethmoidal sinus are carried by- \nSelect and explain. \nA. Frontal Nerve, B. Lacrimal Nerve, C. Nasocilliary Nerve, D. Infra orbital Nerve', 'role': 'user'}, {'content': 'Answer: C \nExplanation: As discussed in preceeding text, nasociliary nerve–branch of opthalmic division of trigeminal nerve carries pain sensation from ethmoid sinus.', 'role': 'assistant'}]