This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oncology, Subject name: Surgery
Which of the following is the most radiosensitive tumor? 
Select and explain. 
A. Ewing's sarcoma, B. Hodgkin's disease, C. Carcinoma cervix, D. Malignant fibrous histiocytoma
A: Ewing's sarcoma
Answer: A: Ewing's sarcoma 
Explanation: Among the given options, most radiosensitive tumor is Ewing's sarcoma. Most radiosensitive ovarian tumor DysgerminomaQ Most radiosensitive brain tumor MedulloblastomaQ Most radiosensitive kidney tumor Wilms tumorQ Most radiosensitive bone tumor Ewing's sarcomaQ & Multiple myelomaQ