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': 'Treatment of malignant ovarian tumours is : \nSelect and explain. \nA. Total hysterectomy, B. Total salpingo - oophorectomy, C. Total hysterectomy with unilateral salpingo - oophrectomy, D. Total hysterectomy with bilateral salpingo -oophorectomy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Total hysterectomy with bilateral salpingo -oophorectomy', 'role': 'assistant'}]