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
Postural hypotension is the common side effect of which of the following ? 
Select and explain. 
A. ACE inhibitors, B. Alpha receptor blockers, C. Arteriolar dilators, D. Selectiveβ1 blockers
B: Alpha receptor blockers
Answer: B: Alpha receptor blockers 
Explanation: None