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
Korner's septum is seen in: 
Select and explain. 
A. Petrosquamous suture, B. Temporosquamous suture, C. Petromastoid suture, D. Frontozygomatic suture
A: Petrosquamous suture
Answer: A: Petrosquamous suture 
Explanation: Petrosquamous suture