This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vascular surgery, Subject name: Surgery
[{'content': 'Site of diabetic for ulcer \nSelect and explain. \nA. Medial malleolus, B. Lateral malleolus, C. Heel, D. Head of metatarsal', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Diabetic foot ulcer occurs in the pressure areas like heel and head of metatarsals. Since greater pressure is experienced on heel, it would be a better answer. Reference: Bailey and love 27th edition, page 531,SRB', 'role': 'assistant'}]