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
[{'content': 'Surgical landmarks for the identification of facial nerve in mastoid surgeries are all except: \nSelect and explain. \nA. Below the processus cochleariformis, B. Above and posterior to oval window, C. Medial to short process of incus, D. Behind the pyramid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (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.', 'role': 'assistant'}]