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': 'Pupil in Ac attack of Ant. Uveitis is \nSelect and explain. \nA. Semidilated, B. Large and fixed, C. Irregular & constricted, D. Constricted & sluggish reacting', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Constricted and sluggish', 'role': 'assistant'}]