This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower limb, Subject name: Anatomy
[{'content': 'Sacral promontory is the landmark for \nSelect and explain. \nA. Origin of superior mesenteric aery, B. Termination of presacaral nerve, C. Origin of inferior mesenteric aery, D. Origin of Celiac aery', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The superior hypogastric plexus or the presacral nerve lies in front of the bifurcation of the abdominal aoa and the body of fifth lumbar veebra just below which lies sacral promontery.Origin of inferior mesenteric aery is in front of L3.Origin of superior mesenteric aery is in front of L1.Reference: Textbook of anatomy,Abdomen and Lower limb, Vishram Singh, 2nd editon, page no.162,199,160', 'role': 'assistant'}]