This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Anatomy
Most common site of medulloblastoma is 
Select and explain. 
A. Medulla, B. Cerebellum, C. Cerebrum, D. Pineal gland
B: Cerebellum
Answer: B: Cerebellum 
Explanation: Medulloblastoma is a cancerous tumor--also called cerebellar primitive neuroectodermal tumor (PNET)--that stas in the region of the brain at the base of the skull, called the posterior fossa. These tumors tend to spread to other pas of the brain and to the spinal cord. Refer Robbins page no 1312