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: Medicine
Treatment of orthostatic hypotension is 
Select and explain. 
A. Dopamine, B. Diuretics, C. Fludrocortisone, D. Calcium channel blockers
C: Fludrocortisone
Answer: C: Fludrocortisone 
Explanation: None