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: Medicine
Dilutionalhyponatremia is seen in - 
Select and explain. 
A. Addison's disease, B. DI, C. Diuretic therapy, D. None
A: Addison's disease
Answer: A: Addison's disease 
Explanation: In Addison's disease in more advanced stages of adrenal destruction,serum sodium, chloride and bicarbonate levels are reduced,serum potassium level is elevated. Hyponatremia is due to both loss of sodium into urine and to movement into intracellular compament.(Harrison 17 pg 2264).-