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: Physiology
[{'content': 'Deficiency of cortisol causes: \nSelect and explain. \nA. Cushing syndrome, B. Graves disease, C. Addison disease, D. Acromegaly', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Addison’s Disease:\nAddison’s disease results from an inability of the adrenal cortices\xa0 to\xa0 produce\xa0 sufficient\xa0 adrenocortical\xa0 hormones.\nIn\xa0 Addison’s\xa0 disease,\xa0 either\xa0 glucocorticoid\xa0 or mineralocorticoid deﬁciency may come ﬁrst, but eventually all\xa0patients fail to secrete both classes of corticosteroid.', 'role': 'assistant'}]