This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'Which of the following does not belong to gestational trophoblastic tumour \nSelect and explain. \nA. Chorioangioma, B. Placental site trophoblastic tumour, C. Choriocarcinoma, D. Hydatidiform mole', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Gestational trophoblastic diseases include : Hydatiform mole Invasive mole Placental site trophoblastic tumor Choriocarcinoma Ref: Dutta Obs 9e pg 180.', 'role': 'assistant'}]