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: Pathology
Most common radiosensitive ovarian tumour - 
Select and explain. 
A. Dysgerminoma, B. Granulosa cell tumour, C. Teratoma, D. Theca cell tumour
A: Dysgerminoma
Answer: A: Dysgerminoma 
Explanation: Dysgerminomas are extremely radiosensitive, and even those that have extended beyond the ovary can generally be controlled by radiotherapy.