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 modalities for ovarian cancers is : \nSelect and explain. \nA. Staging laparotomy, B. Surgery, C. Chemotherapy, D. Combined approach', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Combined approach', 'role': 'assistant'}]