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
Connecting sinus between cavernous sinus and transverse sinus 
Select and explain. 
A. Superior petrosal sinus., B. Inferior petrosal sinus., C. Horizontal sinus, D. Horizontal sinus   Vertical sinus.
A: Superior petrosal sinus.
Answer: A: Superior petrosal sinus. 
Explanation: None