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': 'Indications for USG at 32-36 weeks are all except: \nSelect and explain. \nA. If anomaly scan not done at 1st trimester, B. In multiple pregnancy, C. To diagnose IUGR, D. To determine positioning of placenta', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is a, i.e. If anomaly scan not done at 1st trimesterFor anomaly scan copy USG is done in 1st trimester and repeated at 16 to 20 weeks. There is no use getting a scan done in third trimester as MTP cannot be done beyond 20 weeks.', 'role': 'assistant'}]