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': 'Antenatal screening is done using the following except : \nSelect and explain. \nA. Cord blood, B. Amniotic fluid, C. Chorionic villi, D. Peripheral lymphocytes', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Peripheral lymphocytes', 'role': 'assistant'}]