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': 'A 6-month-old infant was treated for H. influenzae meningitis. Most important investigation to be done before discharging the patient is: \nSelect and explain. \nA. MRI, B. Brainstem evoked response audiometry, C. Growth screening test, D. Psychotherapy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (b) Brainstem evoked response audiometry(Ref. Cummings, 6th ed., 2076)Meningitis can lead to labyrinthitis and thereby deafness which an infant will not report and if diagnosed early, cochlear implantation will have good results, so BERA needs to be done.', 'role': 'assistant'}]