This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnosis in Obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'Fetal anemia is detected on Doppler of: \nSelect and explain. \nA. Uterine artery, B. Umbilical artery, C. Middle cerebral artery, D. Any of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is c, i.e. Middle cerebral arteryRef. Williams 23/e, p 362, 363As discussed in the text:Doppler of Middle cerebral artery is used to detect.(i). Fetal anemia as in Rh isoimmunization, vasa previa and TTTS(ii). IUGR', 'role': 'assistant'}]