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
Among all of the following foramens in the base of skull, which is, the most posteriorly present: 
Select and explain. 
A. Foramen spinosum, B. Foramen rotundum, C. Foramen ovale, D. All at same level
A: Foramen spinosum
Answer: A: Foramen spinosum 
Explanation: None