This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
[{'content': 'Necrobiosis lipoidica is seen in - \nSelect and explain. \nA. DI, B. Lyme disease, C. Diabetes mellitus, D. Symmonds disease', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans is option 3- DM Necrobiosis lipoidica is a rare granulomatous skin disorder classically described in patients with diabetes. Also called Oppenheim-Urbach disease. Mostly involves the skin of the anterior aspect of the legs. Correlated to the severity of the diabetic microangiopathy.', 'role': 'assistant'}]