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
All of the following are nonselective beta blockers with additional actions except - 
Select and explain. 
A. Carvedilol, B. Betoxalol, C. Caeolol, D. Labetolol
B: Betoxalol
Answer: B: Betoxalol 
Explanation: Ans. is 'b' i.e., Betoxalol