This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
Small round cell tumors - 
Select and explain. 
A. Wilm's tumor, B. Retinoblastoma, C. Rhabdomyosarcoma, D. All
D: All
Answer: D: All 
Explanation: Characterized by small round.. Undifferentiated cells. Patternless sheets of cells with high cellullarity. And high N: C ratio. Include ewings sarcoma, peripheral neuroectodermal tumour, thabdomyosarcoma, synol sarcoma, non-hodgkins lymphoma, retinoblastoma etc