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
A 40 year old presenting with dizziness on standing with systolic reduction of BP of 50mm Hg;appropriate treatment -a) Graded compression stockingsb) Salbutamolc) Fludrocortisoned) β-blockers 
Select and explain. 
A. a, B. bc, C. ac, D. b
C: ac
Answer: C: ac 
Explanation: None