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
Antrum of Highmore is? 
Select and explain. 
A. Maxillary, B. Ethmoid, C. Sphenoid, D. Frontal
A: Maxillary
Answer: A: Maxillary 
Explanation: The antrum of Highmore is maxillary sinus. It is the largest of paranasal sinuses and occupies the body of the maxilla. (Reference: Textbook of PL Dhingra and Shruti Dhingra; 7th edition, pg no. 209)