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': 'Cell - free fetal DNA screening is recommended in all except \nSelect and explain. \nA. Multifetal pregnancy., B. Women 35 years or older at delivery., C. Prior pregnancy complicated by trisomy 21., D. Partner has balanced robertsonian translocation.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ACOG - does not recommend this test in women with low risk pregnancies or multi fetal gestation.', 'role': 'assistant'}]