This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Surgery
Most common tumor to metastasize to brain is: 
Select and explain. 
A. Breast, B. Melanoma, C. Lung, D. Prostate
C: Lung
Answer: C: Lung 
Explanation: Common malignancies metastasizing to brain: Lung > Breast > Melanoma Brain metastases are the most common brain tumors; they are three times more common than all primary brain tumors combined. Ref : Harrison 18/e p3390