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
Laparoscopic cholecystectomy done in a patient with cholelithiasis.Pathology report shows adenocarcinoma with invasion of muscle layer. CT was normal. Further tit is: 
Select and explain. 
A. Wait and regular follow up, B. Wedge hepatic resection with lymph node dissection, C. Excise all port sites, D. Radiotherapy
B: Wedge hepatic resection with lymph node dissection
Answer: B: Wedge hepatic resection with lymph node dissection 
Explanation: None