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': "Increased acidosis and hypoxaemia is seen in : \nSelect and explain. \nA. Normal Doppler wave form, B. Increased fetal diastolic flow in the middle cerebral aery with absent diastolic flow in the aoa, C. Presence of the 'notch' in the uterine aery, D. Absent umbilical aery", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Increased fetal diastolic flow in the middle cerebral aery with absent diastolic flow in the aoa', 'role': 'assistant'}]