This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Ophthalmology
[{'content': 'Pupil in acute iritis is: \nSelect and explain. \nA. Normal, B. Dilated, C. Constricted, D. Veically oval', 'role': 'user'}, {'content': 'Answer: C \nExplanation: In acute iritis (inflammation of iris) iris is irritated and pupil constricts due to stimulus of irritation Veically oval, mid-dilated, non reacting pupil is seen in acute angle closure glaucoma.', 'role': 'assistant'}]