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': 'Doppler ultrasonography in IUGR & Preeclampsia shows notch in which aery : \nSelect and explain. \nA. Umbilical aery, B. Uterine aery, C. Internal iliac aery, D. Vitiline aery', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Uterine aery', 'role': 'assistant'}]