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 7-year-old child developed acute otitis media. He was treated with antibiotics for 10 days. His pain and fever subsided completely but still had conductive hearing loss. Your next line of treatment is: \nSelect and explain. \nA. Give another course of a different antibiotic, B. Do a myringotomy and culture the middle ear fluid, C. Do a myringotomy and insert a grommet, D. Wait and watch for 3 months for fluid to drain spontaneously', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Since antibiotic treatment has been effective to relieve pain and fever, the child is left with a sterile fluid in the middle ear. If this fluid does not drain spontaneously in another 12 weeks treat the case as one of otitis media with effusion.', 'role': 'assistant'}]