This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Facial Nerve And Its Disorders, Subject name: ENT
Surgical landmarks for the identification of facial nerve in mastoid surgeries are all except: 
Select and explain. 
A. Below the processus cochleariformis, B. Above and posterior to oval window, C. Medial to short process of incus, D. Behind the pyramid
A: Below the processus cochleariformis
Answer: A: Below the processus cochleariformis 
Explanation: (a) Below the processus cochleariformis(Ref. Scott Brown, 6th ed., 1386, 1387)The first genu of facial nerve lies antero-superior to the Processes cochleariformis.