This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
Ankle-brachial pressure index (ABPI)less than 0.3 indicates 
Select and explain. 
A. Normal value, B. Claudication, C. Rest pain, D. Imminent necrosis
D: Imminent necrosis
Answer: D: Imminent necrosis 
Explanation: Ankle-brachial pressure index (ABPI) is the ratio of systolic pressure at the ankle to that in the ipsilateral arm.> 1.3Calcified, incompressible aeries that are often found in diabetic patients.0.9 - 1.3 Normal< 0.9 Claudication< 0.5Rest pain< 0.3 Imminent necrosisRef: Bailey and love pg: 945