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: ENT
Which is a Pneumatic Bone? 
Select and explain. 
A. Maxillary, B. Parietal, C. Temporal, D. All
A: Maxillary
Answer: A: Maxillary 
Explanation: Pneumatic bones are one which contain large air spaces lined by epithelium e.g.: maxilla, sphenoid, ethmoid, Frontal etc. They make the skull light in weight, help in resonance of voice, and act as air conditioning chambers for the inspired air.