This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardio thoracic surgery  , Subject name: Surgery
[{'content': 'A 80 years old male presented with lung abscess in left upper zone. Best treatment of modalities is \nSelect and explain. \nA. Antibiotics according to organisms, B. Surgical drainage, C. Tube thoracostomy, D. Wait and watch', 'role': 'user'}, {'content': "Answer: A \nExplanation: Appropriate high dose antibiotics are staed depending on sputum culture like penicillins,3rd generation cephalosporins like cefoperazone,ceftriaxone for 3-6 weeks.Postural drainage for 2-3 hours,3 times daily.80-90% of acute abscesses resolve by medical therapy.Surgical drainage is not commonly done. Reference:SRB's manual of surgery,5th edition,page no:1120,1121", 'role': 'assistant'}]