The following are multiple choice questions (with answers) about medical knowledge.   **Question:** With respect to peripheral vascular disease, all of the following statements are true except:   (A) Ankle brachial index < 0.5 indicates critical limb ischemia   (B) The ankle-brachial index is different at rest than that during exercise   (C) L-arginine is useful for providing endothelium-independent vasorelaxation   (D) Smoking has a greater association with peripheral vascular disease than coronary vascular disease
['(D) Smoking has a greater association with peripheral vascular disease than coronary vascular disease <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Ankle brachial index < 0.5 indicates critical limb ischemia \n (B) The ankle-brachial index is different at rest than that during exercise \n (C) L-arginine is useful for providing endothelium-independent vasorelaxation \n (D) Smoking has a greater association with peripheral vascular disease than coronary vascular disease <> possible answers', '  With respect to peripheral vascular disease, all of the following statements are true except: <> context@']