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: Medicine
The amount of GI bleed that can be detected by angiography - 
Select and explain. 
A. 0.5 ml/min, B. 0.1 ml/min, C. 5 ml/min, D. 2 ml/min
A: 0.5 ml/min
Answer: A: 0.5 ml/min 
Explanation: None