This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Liver, Subject name: Surgery
[{'content': 'Multiple liver secondaries are most common in the following cancers: \nSelect and explain. \nA. Head of pancreas, B. Stomach, C. Gallbladder, D. Periampullary', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Gallbladder* Multiple Mets are common in GB cancer.* Periampullary and Pancreatic cancers will produce Solitary mets commonly.', 'role': 'assistant'}]