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
[{'content': 'Subjective test of hearing is? \nSelect and explain. \nA. Pure tone audiometry, B. Oto acoustic emission, C. BERA, D. Impedence audiometry', 'role': 'user'}, {'content': "Answer: A \nExplanation: ANSWER; (A) Pure tone audiometryREF: Achars Textbook of Pediatrics (4th Edn) by Swama Rekha Bhat p: 612, Nelson's pediatrics 18th ed ch: 636Subjective testsObjectives testsBirth -5months : behavoria! tests without rein - forcement6months -30months: visual reinforcement audiometry30 months - 5 years: play audiometry> 5yrs: speech tests> 5yrs: pure tone audiometry> 5yrs: pure tone audiometryOtoacoustic emissions: low specificity and takesaround 12 minstympanometryBERA: high specificity , takes around 21 mins Impedence audiometry Acoustic reflectometryChild s cooperating is needed for subjective tests.", 'role': 'assistant'}]