This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
Which antiglaucoma drugs can be used in Asthamatic patient 
Select and explain. 
A. Timolol, B. Betoxolol, C. Propanolol, D. All the above
B: Betoxolol
Answer: B: Betoxolol 
Explanation: Refer kDT 6/e p 145 Betaxolol is a selective beta1 receptor blocker used in the treatment of hypeension and glaucoma. Being selective for beta1 receptors, it typically has fewer systemic side effects than non-selective beta-blockers, for example, not causing bronchospasm as timolol may