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: Pathology
Most common brain tumor in adults? 
Select and explain. 
A. Glioma, B. Metastases, C. Meningioma, D. Astrocytoma
B: Metastases
Answer: B: Metastases 
Explanation: Metastases is the most common type of brain tumor id adults.
Most common primary for Metastases is lung.