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': 'Which of the following regarding choriocarcinoma is true : \nSelect and explain. \nA. Worst prognosis, B. Treatment of choice is hysterectomy, C. Lung metastasis cause hemoptysis, D. Radiotherapy is preferred', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Lung metastasis cause hemoptysis', 'role': 'assistant'}]