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': 'Mild dilated fixed pupil seen in \nSelect and explain. \nA. Acute congestive glaucoma, B. Iridocyclitis, C. Chronic congestive glaucoma, D. Open angle glaucoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Acute congestive glaucoma', 'role': 'assistant'}]