This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
Pain sensations from the ethmoidal sinus are carried by 
Select and explain. 
A. Frontal Nerve, B. Lacrimal Nerve, C. Nasocilliary Nerve, D. Intraorbital Nerve
C: Nasocilliary Nerve
Answer: C: Nasocilliary Nerve 
Explanation: nasociliary nerve branch of ophthalmic division of trigeminal nerve carries pain sensation from ethmoid sinus. Ref Dhingra 6/e,p 188