This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
[{'content': 'A patient presents with lesions as shown.Which condition would you rule out? \nSelect and explain. \nA. Diabetes mellitus, B. Sarcoidosis, C. SLE, D. Hyperthyroidism', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The above image shows presence of Necrobiosis lipoidica which is seen in Diabetes Mellitus.\nIt is characterized well circumscribed, yellowish - brown, ulcerative lesions over shins due to diabetic microangiopathy.', 'role': 'assistant'}]