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
Ankle edema caused by calcium channel blockers is prevented by 
Select and explain. 
A. Propanalol, B. Adrenaline, C. Ropinirole, D. ACE inhibitors
D: ACE inhibitors
Answer: D: ACE inhibitors 
Explanation: Calcium channel blockers can lead to ankle edema caused by precapillary dilation of vessels.
ACE inhibitors or Angiotensin Receptor Blockers can Prevent the edema by causing postcapillary dilation of vessels.