This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal Radiology, Subject name: Radiology
[{'content': 'Reversal of SMA and SMV relationship is seen in? \nSelect and explain. \nA. Midgut Volvulus, B. Duodenal Atresia, C. Annular pancreas, D. Ileal Atresia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Figure: Inversion in the SMA/SMV relationship with the SMA on the right and the SMV on the left. Figure: Whirlpool sign with twisting of mesentery and mesenteric vessels, is seen in Malrotation/ MidGut Volvulus.', 'role': 'assistant'}]