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: ENT
Nerve damaged in radical mastoidectomy is - 
Select and explain. 
A. Facial, B. Cochlear, C. Vestibular, D. All
A: Facial
Answer: A: Facial 
Explanation: Complications of radical mastoidectomy

Injury to facial nerve
Dislocation of incus
Injury to horizontal semicircular canal. The patient will have post-operative giddiness and nystagmus.
Injury to sigmoid sinus with profuse bleeding.
Injury to the dura of middle cranial fossa.