This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
Subjective test of hearing is 
Select and explain. 
A. Pure tone audiometry, B. Otoacoustic emission, C. BERA, D. Impedance audiometry
A: Pure tone audiometry
Answer: A: Pure tone audiometry 
Explanation: Uses of Pure Tone Audiogram (a) It is a measure of threshold of hearing by air and bone conduction and thus the degree and type of hearing loss. (b) A record can be kept for future reference. (c) Audiogram is essential for prescription of hearing aid. (d) Helps to find degree of handicap for medicolegal purposes. (e) Helps to predict speech reception threshold. Ref : Dhingra 7e pg 25.