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': 'Most common site of metastasis in lung carcinoma: \nSelect and explain. \nA. Liver, B. Adrenal, C. Bone, D. Brain', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Metastasis- M/c site of metastasis in CA lung is brain (new updates)- B>B>L>A>L* Brain > Bone > Liver > Adrenal > lung', 'role': 'assistant'}]