This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: ENT
Office headache is due to inflammation of which sinus? 
Select and explain. 
A. Frontal, B. Maxillary, C. Ethmoidal, D. Sphenoid
A: Frontal
Answer: A: Frontal 
Explanation: Office Headache: Headache on sunrise & relief at sunset is seen in Frontal sinusitis (Typical) SITE OF TENDERNESS Maxillary Cheek & Alveolus Frontal Below eyebrow (Office headache) Ethmoid Medial canthus of eye Sphenoid Veex