This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Childhood malignancies, Subject name: Pediatrics
Opsoclonus is associated with: 
Select and explain. 
A. Neuroblastoma, B. Nephroblastoma, C. Retinoblastoma, D. Hypernephroma
A: Neuroblastoma
Answer: A: Neuroblastoma 
Explanation: Opsoclonus-myoclonus-ataxia syndrome' associated with Neuroblastoma Rapid, uncontrollable jerking eye & body movements, poor coordination