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
The property which makes betaxolol different from timolol is that betaxolol: 
Select and explain. 
A. Is a β1 selective blocker, B. Is more efficacious in glaucoma, C. Produces less ocular side effects, D. Is shorter acting
A: Is a β1 selective blocker
Answer: A: Is a β1 selective blocker 
Explanation: None