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: Radiology
Commonest calcifying brain tumor in a child is: 
Select and explain. 
A. Medulloblastoma, B. Craniopharyngioma, C. Glioma, D. Meningioma
B: Craniopharyngioma
Answer: B: Craniopharyngioma 
Explanation: B i.e. Craniopharyngeoma