This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
[{'content': '"EMA-CO regimen" is useful in Rx of \nSelect and explain. \nA. Metastatic breast cancer, B. Advanced endometrial sarcoma, C. Gestational trophoblastic neoplasia, D. Ovarian tumor with peritoneal implants', 'role': 'user'}, {'content': 'Answer: C \nExplanation: EMA-CO a cyclic non-cross-resistant combina on of etoposide, methotrexate, and dactinomycin alternating with cyclophosphamide and vincristine.', 'role': 'assistant'}]