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
Hypernatremia is caused by - 
Select and explain. 
A. Prednisolone, B. Fludrocoisone, C. Hydrocoisone, D. Dexamethasone
C: Hydrocoisone
Answer: C: Hydrocoisone 
Explanation: Ans. is 'b' i.e., Fludrocoisone Fludrocoisone has maximum mineralocoicoid activity, so it will cause maximum hypernatremia. Hypernatremia is propoional to the mineralocoicoid efficacy of steroids.