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: Pharmacology
Coicosteroid of choice in Acute Adrenal Insufficiency is: 
Select and explain. 
A. Fludrocoisone, B. Hydrocoisone, C. Dexamethasone, D. Prednisolone
B: Hydrocoisone
Answer: B: Hydrocoisone 
Explanation: Hydrocoisone