This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ovary, Subject name: Gynaecology & Obstetrics
[{'content': 'Which of the following ovarian tumors is most radiosensitive - \nSelect and explain. \nA. Carcinoid, B. Dysgerminoma, C. Serous Cystadenocarcinoma, D. Brenner tumor', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Dysgerminoma o Dysgerminoma is the most radiosensitive among the ovarian tumors, but radiotherapy is not the treatment of choice as dysgerminoma occurs in pre - reproductive or reproductive age group and fertility is impaired with radiotherapy.", 'role': 'assistant'}]