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': 'A 25-year-old male gives a history of redness, pain and mild diminution of vision in one eye for past 3 days. There is also a history of low backache for the past one year. On examination there is circumcorneal congestion, cornea is clear apa from a few fine keratic precipitates on the corneal endothelium, there are 2+ cells in the anterior chamber and the intraocular pressure is within normal limits. The patient is most likely suffering from \nSelect and explain. \nA. Acute attack of angle closure glaucoma, B. HLA B-27 related anterior uveitis, C. JRA associated uveitis, D. Herpetic keratitis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. HLA-B-27 related', 'role': 'assistant'}]