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
Long acting coicosteroid is ? 
Select and explain. 
A. Triamcinolone, B. Betamethasone, C. Hydrocoisone, D. Prednisolone
B: Betamethasone
Answer: B: Betamethasone 
Explanation: Ans. is 'b' i.e., Betamethasone Sho acting glucocoicoids (t1/2 : 8-12 hrs.) : Coisol, hydrocoisone. Intermediate acting glucocoicoids (t1/2 : 12-36 hrs.) : Prednisolone, methylprednisolone, triamcinolone. Long acting glucocoicoids (t1/2 : 36-54 hrs.) : Dexamethasone, betamethasone.