This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Surgery
intermittent claudication is seen when ankle brachial index is ? 
Select and explain. 
A. 0.9-1, B. <0.3, C. 0.5-0.9, D. >1.1
C: 0.5-0.9
Answer: C: 0.5-0.9 
Explanation: 0.5-0.9 = intermittent claudication ref : bailey and love 27th ed