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
[{'content': 'Initial screening test for newborn hearing disorder - \nSelect and explain. \nA. ABR - Auditory Brainstem Response, B. Otoacoustic Emissions (OAE), C. Free Field Audiometry, D. Visual reinforcement audiometry', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]