This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oncology, Subject name: Surgery
[{'content': 'Which of the following is overall most common site of metastasis? \nSelect and explain. \nA. Brain, B. Bone, C. Lungs, D. Liver', 'role': 'user'}, {'content': 'Answer: C \nExplanation: * Overall most common site of metastasis - Lungs > Liver > Bone > Brain', 'role': 'assistant'}]