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': 'Ultrasound of a 36 year of gravida reveals small grape-like cystic structures without the evicence of a developing embryo. A diagnosis of complete most likely reveal that the : \nSelect and explain. \nA. Genotype of the mole is a 46XXX and is completely paternal in origin, B. Genotype of the mole is triploid, C. hCG levels are markedly decreased, D. Serum levels of alpha-fetoprotein are elevated', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Genotype of the mole is a 46XXX and is completely paternal in origin', 'role': 'assistant'}]