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
Which of the following complication would result if the postero superior retraction pocket in the eardrum is allowed to progress? 
Select and explain. 
A. Tympanoscelerosis, B. Teiary cholesteatoma, C. Secondary cholesteatoma, D. Sensori-neural hearing loss
D: Sensori-neural hearing loss
Answer: D: Sensori-neural hearing loss 
Explanation: Postero superior retraction pocket of the ear drum, if allowed to progress leads to complications such as sensorineural hearing loss, facial nerve involvement and a labrynthine fistula formation. Other extracranial complications which can occur includes labrynthitis, mastoiditis, petrositis and soft tissue abscess.