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': 'Rate of subsequent GTN in complete molar pregnancy? \nSelect and explain. \nA. < 1 %, B. 1-5 %, C. 5-10 %, D. 15-20 %', 'role': 'user'}, {'content': "Answer: D \nExplanation: Complete moles have a 15 to 20 percent incidence of malignant sequelae, compared with 1 to 5 percent following paial moles.Reference: William's Obstetrics; 25th edition, chapter 20; Gestational trophoblastic diseases", 'role': 'assistant'}]