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: Unknown
[{'content': 'Cochlear implant is indicated at the minimum age of: \nSelect and explain. \nA. 12 months, B. At birth, C. intrauterine, D. 24 months', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The rationale of early surgery in deaf / mutism is to give auditory stimuli to child so that the child develops speech.', 'role': 'assistant'}]