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
A patient presents with lesions as shown.Which condition would you rule out? 
Select and explain. 
A. Diabetes mellitus, B. Sarcoidosis, C. SLE, D. Hyperthyroidism
A: Diabetes mellitus
Answer: A: Diabetes mellitus 
Explanation: The above image shows presence of Necrobiosis lipoidica which is seen in Diabetes Mellitus.
It is characterized well circumscribed, yellowish - brown, ulcerative lesions over shins due to diabetic microangiopathy.