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': 'For a woman with history of prior two molar pregnancies, the risk of having a third molar pregnancy is \nSelect and explain. \nA. 1%, B. 5%, C. 10%, D. 20%', 'role': 'user'}, {'content': "Answer: D \nExplanation: For those with a prior complete mole, the risk of another mole is 0.9 percent. With a previous paial mole, the rate is 0.3 percentAfter two prior molar pregnancies, approximately 20 percent of women had a third moleReference: William's Obstetrics; 25th edition, chapter 20; Gestational trophoblastic diseases", 'role': 'assistant'}]