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': 'Multiple liver secondaries are most common in the following cancers - \nSelect and explain. \nA. Head of pancreas, B. Stomach, C. Gall bladder, D. Periampullary', 'role': 'user'}, {'content': 'Answer: C \nExplanation: GIT is most common site.', 'role': 'assistant'}]