This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
Which of the following is involved in gradenigo's syndrome? 
Select and explain. 
A. Superior saggital sinus, B. Cavernous sinus, C. Transverse sinus, D. Sigmoid sinus
C: Transverse sinus
Answer: C: Transverse sinus 
Explanation: Headache and earache are the most frequent symptoms of transverse sinus thrombosis. A transverse sinus thrombosis may also present with otitis media, sixth nerve palsy, and retroorbital or facial pain (Gradenigo's syndrome). Sigmoid sinus and internal jugular vein thrombosis may present with neck pain. Ref Harrison 20th edition page 1018