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
To distinguish between cochlear and post cochlear damage, test done is: 
Select and explain. 
A. Brainsterm evoked response audiometry, B. Impedence audiometry, C. Pure tone audiometry, D. Auditory cochlear potential
A: Brainsterm evoked response audiometry
Answer: A: Brainsterm evoked response audiometry 
Explanation: BERA is very useful in distinguishing between cochlear pathology and retrocochlear pathology for SNHLImpedence audiometry and PTA tests the middle ear pathology.