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: Surgery
[{'content': 'A 80 years old male presented with lung abscess in left upper zone. Best treatment modality 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: None', 'role': 'assistant'}]