This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cranial cavity, Subject name: Anatomy
All of the following statements are true regarding cavernous sinus thrombosis EXCEPT: 
Select and explain. 
A. Loss of jaw jerk, B. Inferior Ophthalmic Vein can spread infection from dangerous area of face, C. Ethmoidal Sinusitis is the most common cause, D. Loss of sensation around the eye
A: Loss of jaw jerk
Answer: A: Loss of jaw jerk 
Explanation: Cavernous Sinus Thrombosis does not involve the Mandibular BRANCH of trigeminal, hence jaw jerk is intact. Other features are :- Inferior Ophthalmic Vein can spread infection from dangerous area of face Loss of sensation around the eye