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: Pharmacology
[{'content': "Drug causing Addison's disease is \nSelect and explain. \nA. Ketoconazole, B. Aminoglutethimide, C. Cyclosporine, D. Glucocoicoids", 'role': 'user'}, {'content': "Answer: A \nExplanation: Addison's disease, also known as primary adrenal insufficiency and hypocoisolism, is a long-term endocrine disorder in which the adrenal glands do not produce enough steroid hormones A dose dependent decrease in serum hydrocoisone due to synthesis inhibition is noted with the use of ketoconazole. others-mitotane, metyrapone, aminoglutethimide, etomidate (REF.Essential of medical pharmacology K D TRIPATHI 6 Edition, Page No - 763)", 'role': 'assistant'}]