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
Most common extracranial solid tumor in children is 
Select and explain. 
A. Wilm's tumor, B. Neuroblastoma, C. Hydronephrosis, D. Rhabdomyosarcoma
B: Neuroblastoma
Answer: B: Neuroblastoma 
Explanation: Neuroblastoma is the most common extracranial solid tumor in children and the most commonly diagnosed malignancy in infants. Reference: Nelson; Neuroblastoma; Page no: 2461