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 cavernous sinus does not communicate with the 
Select and explain. 
A. Opthalmic vein, B. Internal jugular vein, C. External jugular vein, D. Pterygoid plexus
C: External jugular vein
Answer: C: External jugular vein 
Explanation: None