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
Most common CNS tumor showing calcification is : 
Select and explain. 
A. Craniopharyngioma, B. Oligodendroglioma, C. Meningioma, D. Pilocytic astrocytoma
A: Craniopharyngioma
Answer: A: Craniopharyngioma 
Explanation: Brain tumors showing calcification:
Craniopharyngioma > Oligodendroglioma > Meningioma