This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Congenital Lesions and Stridor, Subject name: ENT
Most superior sinus in the face is: 
Select and explain. 
A. Frontal sinus, B. Ethmoid sinus, C. Maxillary sinus, D. Sphenoid sinus
A: Frontal sinus
Answer: A: Frontal sinus 
Explanation: (a) Frontal sinus(Ref. Scott Brown, 6th ed., 4/3/2)Most superior sinus is the frontal sinus followed by ethmoid, sphenoid and maxillary sinuses.