This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Adrenal, Subject name: Pharmacology
An 18 month old child with ambiguous genitalia presented to the hospital, his BP is 118/78 mm Hg, Serum K+ is 6 mEq/L, serum sodium is 120 mEq/L. Patient was staed on I.V. fluids. What additional specific therapy will you add? 
Select and explain. 
A. Hydrocoisone, B. Potassium binding resin, C. Digoxin, D. Calcium gluconate
A: Hydrocoisone
Answer: A: Hydrocoisone 
Explanation: Clinical scenario and investigational findings point towards diagnosis of Congenital Adrenal Hyperplasia. All patients with classical CAH require replacement therapy with Hydrocoisone . Those with salt wasting also require mineralocoicoid replacement. The goals of therapy are to restore levels of physiological steroid hormones to the normal range