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: Pathology
Flexner-Wintersteiner rossette is seen in? 
Select and explain. 
A. Hepatoblastoma, B. Nephroblastoma, C. Neuroblastoma, D. Retinoblastoma
D: Retinoblastoma
Answer: D: Retinoblastoma 
Explanation: Ans. is 'd' i.e., Retinoblastoma