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
The maxillary nerve arises from the trigeminal ganglion in the middle cranial fossa. It passes forward in the lateral wall of the cavernous sinus and leaves the skull through which of the following foramen to enter the pterygopalatine fossa - 
Select and explain. 
A. Foramen ovale, B. Foramen spinosum, C. Foramen rotundum, D. Foramen lacerum
C: Foramen rotundum
Answer: C: Foramen rotundum 
Explanation: Maxillary nerve passes through foramen rotundum.