A 62-year-old female is evaluated for a 2-month history of exertional right leg pain. Right ankle-brachial index (ABI) is 0.75, and left ABI is 0.92. Her 10-year risk of atherosclerotic cardiovascular disease (ASCVD) is 5.4%. What is the most likely cause of her leg pain?
a) Peripheral arterial disease (PAD)
b) Lumbar spinal stenosis
c) Peripheral neuropathy
d) Venous insufficiency
