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: Ophthalmology
[{'content': 'A patient having glaucoma develops blepharoconjunctivitis after instilling some anti-glaucoma drug. Which of the following drug can be responsible for it : \nSelect and explain. \nA. Timolol, B. Latanosprost, C. Dipiverine, D. Pilocarpine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e.Timolol', 'role': 'assistant'}]