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': 'Laparoscopic cholecystectomy done in a patient with cholelithiasis.Pathology report shows adenocarcinoma with invasion of muscle layer. CT was normal. Further tit is: \nSelect and explain. \nA. Wait and regular follow up, B. Wedge hepatic resection with lymph node dissection, C. Excise all port sites, D. Radiotherapy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]