The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Addison's disease is due to:   (A) Chronic insufficiency of adrenal cortex   (B) Chronic insufficiency of adrenal medulla   (C) Insufficiency of pancreas   (D) Hypofunction of thyroid gland
['(A) Chronic insufficiency of adrenal cortex <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Chronic insufficiency of adrenal cortex \n (B) Chronic insufficiency of adrenal medulla \n (C) Insufficiency of pancreas \n (D) Hypofunction of thyroid gland <> possible answers', "  Addison's disease is due to: <> context@"]