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
Laparoscopic cholecystectomy done in a patient with cholelithiasis. Pathology repo shows adenocarcinoma with invasion of muscular layer. CT was normal. Fuher t/t is 
Select and explain. 
A. Wait and regular follow up, B. Wedge hepatic resection with lymph node dissection, C. Excise all po sites, D. Radiotherapy
B: Wedge hepatic resection with lymph node dissection
Answer: B: Wedge hepatic resection with lymph node dissection 
Explanation: .HEPATIC RESECTION (Indications) * Parasitic and non-parasitic cysts. * Benign and primary malignant tumours of the liver. * Secondary tumour that involves by direct extension like from carcinoma of gallbladder or limited secondaries from carcinoma colon/carcinoids. * Trauma to liver.Removal of small poion of liver either within the segment or traversing segments is called as wedge resection of the liver. ref : SRB&;s manual of surgery,3 rd ed,pg no 559