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
Treatment of choice for stage 4S neuroblastoma is 
Select and explain. 
A. Observation, B. Surgery, C. Chemotherapy, D. Radiotherapy
A: Observation
Answer: A: Observation 
Explanation: The usual treatment for children with low-risk neuroblastoma is surgery for stages 1 and 2 Observation for stage 4S with cure rates generally >90% without fuher therapy. Treatment with chemotherapy or radiation for the rare child with local recurrence can still be curative. Reference: Nelson; Neuroblastoma; Page no: 2463