This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Childhood tumors, Subject name: Pediatrics
A malignant tumor of childhood, that metastsizes to bones most often, is 
Select and explain. 
A. Wilm's tumor, B. Neuroblastoma, C. Adrenal gland tumors, D. Granulosa cell tumor of ovary
B: Neuroblastoma
Answer: B: Neuroblastoma 
Explanation: In neuroblastoma,metastasis is present in 60-70% of children,usually to the skeleton(facial bones,skull),bone marrow,also to lymph nodes. Reference:Essential pediatrics-Ghai,8th edition,page no:617.