This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Radiotherapy Pa 1, Subject name: Radiology
Which of the following tumor is radiosensitive? 
Select and explain. 
A. Melanoma, B. Pancreatic Ca, C. Osteosarcoma, D. Ewings sarcoma
D: Ewings sarcoma
Answer: D: Ewings sarcoma 
Explanation: RADIOSENSITIVE TUMORS : WILM'S TUMOR EWING'S SARCOMA LYMPHOMA SEMINOMA MULTIPLE MYELOMA MEDULLOBLASTOMA PINEALOBLASTOMA RADIORESISTANT TUMOR : MELANOMA OSTEOSARCOMA PANCREATIC CARCINOMA