This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Opso myoclonus is seen in - 
Select and explain. 
A. Neuroblastoma, B. Nephroblastoma, C. Retino blastoma, D. Melanoma
A: Neuroblastoma
Answer: A: Neuroblastoma 
Explanation: None