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: Surgery
Boyd's classification is with regard to 
Select and explain. 
A. Limb ischaemia, B. Arterial stenosis, C. Claudication, D. AV fistula
B: Arterial stenosis
Answer: B: Arterial stenosis 
Explanation: Boyd's classification is with regard to claudication.