This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': 'Treatment of hydatid cyst \nSelect and explain. \nA. Excision of cyst, B. Percutaneous drainage, C. Conservative management, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Puncture - aspiration- injection -reaspiration (PAIR) done percutaneously because it is safe, less invasive, easier to do with low morbidity and moality. Reference: SRB 5th edition page no. 604', 'role': 'assistant'}]