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': 'After undergoing surgery, for Carcinoma of colon a patient developed single liver metastatis of 2 Cm.What you do next : \nSelect and explain. \nA. Resection, B. Chemo radiation, C. Acetic acid injection, D. Radio frequency ablation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Treatment of liver metastasis:\n\nIf the metastasis is anatomically resectable with good margins and allow the preservation of enough liver function after hepatectomy, liver resection is the treatment of choice.\nWhen multiple, bilobar metastasis or extrahepatic metastasis is present, liver resection is not indicated.\nAdjuvant chemotherapy is done in both cases.\nSo in the given patient, a single liver metastasis can be easily resected.', 'role': 'assistant'}]