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
Occlusion of which aery would result in insufficient perfusion of the urinary bladder: 
Select and explain. 
A. Internal iliac, B. External iliac, C. Renal, D. Suprarenal
A: Internal iliac
Answer: A: Internal iliac 
Explanation: Internal iliac