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': 'Choriocarcinoma is most sensitive to: March 2013 \nSelect and explain. \nA. Vincristine, B. Bleomycin, C. Busulfan, D. Methotrexate', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D i.e. Methotrexate', 'role': 'assistant'}]