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 antiglaucoma drug can cause stenosis of nasolacrimal duct 
Select and explain. 
A. Timolol, B. Apraclonidine, C. Latanoprost, D. Adrenaline
A: Timolol
Answer: A: Timolol 
Explanation: Timolol caused stenosis of nasolacrimal duct & obstructs the drainage leading to maximum systemic absorption of drug.
Apracloinidine: Lid retraction.
Adrenaline: Conjuctival pigmentation.
Latanoprost: Iris pigmentation, growth of eyelashes.