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: Pathology
Addison's disease is related to: 
Select and explain. 
A. Adrenal medulla, B. Adrenal cortex, C. Post pituitary, D. Parathyroid gland
B: Adrenal cortex
Answer: B: Adrenal cortex 
Explanation: None