This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood Vessels of Abdomen and Pelvis, Subject name: Anatomy
[{'content': 'Initially, renal arteries are branches of - \nSelect and explain. \nA. Internal pudendal artery, B. External iliac artery, C. Common iliac artery, D. Aorta', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Common iliac artery o Due to ascent of kidneys during development, the blood supply of kidney changes:-Initially when the kidneys are in pelvis, the renal arteries are branches of common iliac arteries.With progressive ascent, the arteries to kidneys are derived from different levels of aorta.", 'role': 'assistant'}]