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': 'In acute congestive glaucoma, pupil is – \nSelect and explain. \nA. Oval and horizontal, B. Oval and vertical, C. Circular, D. Slit like', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In acute congestive glaucoma, pupil is semidilated (mild dilated), vertically oval and fixed.', 'role': 'assistant'}]