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': 'Treatment of choice in postauricular abscess as a complication of otitis media is: \nSelect and explain. \nA. Incision and drainage (l and D), B. l and D plus antibiotics, C. Aspiration and antibiotics, D. l and D antibiotics and mastoidectomy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Postaural abscess usually follows coalescent mastoiditis as after acute otitis media or in cases of mastoiditis with cholesteatoma; a mastoidectomy is therefore important in its treatment.', 'role': 'assistant'}]