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: Gynaecology & Obstetrics
[{'content': 'Which of the following is the most radiosensitive ovarian tumors : \nSelect and explain. \nA. Dysgerminoma, B. Dermoid cyst, C. Serous cystadenoma, D. Endodermal sinus tumour', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is a i.e. Dysgerminoma Dysgerminoma is most radiosensitive tumour not only of ovary but of whole body.', 'role': 'assistant'}]