This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET Jan 2020, Subject name: Surgery
[{'content': 'A 30 years old man presents with cramping gluteal pain after walking 500 meters. Which is the vessel involved? \nSelect and explain. \nA. Aerial disease with aoo-iliac involvement, B. Aerial disease with femoral aery involvement, C. Femoral venous insufficiency, D. Saphenous venous insufficiency', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Aoo-iliac disease - Tissue distal to aery occlusion becomes ischemic - as this aery supplies muscles - causes Intermittent claudication like Buttock, thigh, calf claudication andLeriche syndrome - Erectile dysfunction - Impotence', 'role': 'assistant'}]