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: Skin
[{'content': "Hyperpigmentation is not seen in: \nSelect and explain. \nA. Addision's disease, B. Cushing's Disease, C. Graves Disease, D. Hypothyroidism (Myxedema)", 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Hypothyroidism', 'role': 'assistant'}]