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': 'All of the following conditions are contraindicated or likely to worsen in a case of Primary Open Angle Glaucoma, when treated with Timolol maleate 0.5% eye drops, except \nSelect and explain. \nA. Hypeension, B. Hypercholesterolemia, C. Depression, D. Bronchial asthma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Hypeension Topical nonselective f3 blockers (e.g. timolol) are contraindicated in asthma Q, COPD, CHF, sinus bradycardia & AV blocks; where as selective (31 blockers (e.g. betaxolol) are C/I in sinus bradycardia & atrioventricular blocks only.', 'role': 'assistant'}]