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: Unknown
[{'content': 'Ideal time for doing Quadruple test? \nSelect and explain. \nA. 15-18 weeks, B. 12-14 weeks, C. 10-12 weeks, D. 8-10 weeks', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ref. The Short Textbook of Pediatrics. Pg 600\n\xa0\nTriple and Quadruple test\n\nThe\xa0triple screening\xa0measures the amounts of three substances in a pregnant woman's blood: alpha-fetoprotein (AFP), human chorionic gonadotropin (hCG), and estriol (uE3)\nThe\xa0quad\xa0screen\xa0test\xa0is a maternal blood screening\xa0test\xa0that looks for four specific substances: AFP , hCG , Estriol, and Inhibin-A\n\nIndications\n\nHave a family history of\xa0birth defects\nAre 35 years or older\nUsed possible harmful\xa0medications\xa0or\xa0drugs\xa0during pregnancy\nHave\xa0diabetes\xa0and use insulin\nHad a viral infection during pregnancy\nHave been exposed to high levels of radiation\n\nTiming\nThe triple screen test is performed between the 15th and\xa018th week of pregnancy", 'role': 'assistant'}]