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
Maximum incidence of impotence is seen with the following anti–hypertensive agent: 
Select and explain. 
A. CCBs, B. Beta blockers, C. ARBs, D. ACE inhibitors
B: Beta blockers
Answer: B: Beta blockers 
Explanation: None