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: Medicine
Most radiosensitive brain tumour is - 
Select and explain. 
A. Ependymoma, B. Medulloblastoma, C. Glioblastoma multiforme, D. Astrocytoma
B: Medulloblastoma
Answer: B: Medulloblastoma 
Explanation: None