This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ovarian Tumors and Vulvar cancer, Subject name: Gynaecology & Obstetrics
[{'content': 'A 23-year old patient diagnosed with stage IA malignant ovarian germ cell tumor. Which of the following would be the standard treatment- \nSelect and explain. \nA. Unilateral oophorectomy, B. Bilateral oophorectomy and hysterectomy, C. Unilateral oophorectomy followed by chemotherapy, D. Ovarian biopsy followed by chemotherapy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Approximately 50% to 70% of Germ cell malignancies are stage 1. Since she is a young patient, Feility-sparing surgery ( USO ) is done Almost All germ cell malignancies require Postoperative Chemotherapy.', 'role': 'assistant'}]