This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Occlusion of which aery would result in insufficient perfusion of the urinary bladder: \nSelect and explain. \nA. Internal iliac, B. External iliac, C. Renal, D. Suprarenal', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Internal iliac', 'role': 'assistant'}]