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: Anatomy
[{'content': 'Pain sensation from ethmoid sinus is transmitted through \nSelect and explain. \nA. Infrachlear nerve, B. Nasocilliary nerve, C. Lacrimal nerve, D. Frontal nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: It is the principal nerve supplying the sensory supply to the Ethmoidal sinuses through its anterior and posterior Ethmoidal branches.', 'role': 'assistant'}]