This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney and ureter, Subject name: Surgery
[{'content': 'Horseshoe kidney ascent is prevented by: \nSelect and explain. \nA. Superior mesenteric aery, B. Superior mesenteric vein, C. Inferior mesenteric aery, D. Inferior mesenteric vein', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ascent of horseshoe kidney remains incomplete due to Inferior Mesentric Aery prevents fuher migration of kidney . Isthmus usually located adjacent to L3-L4 veebrae , just below the origin of IMA from abdominal aoa .', 'role': 'assistant'}]