This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pediatrics
Second most common neoplasm seen in children is 
Select and explain. 
A. Lyphoma, B. Brain tumor, C. Wilm's tumor, D. Neuroblastoma
B: Brain tumor
Answer: B: Brain tumor 
Explanation: Also called low-grade gliomas, these are the most common brain tumors in children. Medulloblastomas are the most common type of childhood brain cancer. Most medulloblastomas occur before age 10. Ependymomas are a type of childhood brain tumor that can be benign (noncancerous) or malignant (cancerous). The most common cancers of children are: Leukemia. Brain and spinal cord tumors. Neuroblastoma. Wilms tumor. Lymphoma (including both Hodgkin and non-Hodgkin) Rhabdomyosarcoma. Retinoblastoma. Bone cancer (including osteosarcoma and Ewing sarcoma) Reference: GHAI Essential pediatrics, 8th edition