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
Which of the following β - blocker has membrane stabilizing action 
Select and explain. 
A. Nadalol, B. Atenolol, C. Propanalol, D. Nebivalol
C: Propanalol
Answer: C: Propanalol 
Explanation: β blockers with membrane stabilizing effect: Carvedilol, Betaxolol, Labetalol, Acebutalol, Metaprolol, Propanolol.
Infact Propanalol has the maximum membrane stabilizing property.