This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immune system, Subject name: Medicine
[{'content': "All are seronegative(spondyloepiphyseal) ahritis with ocular manifestations, except \nSelect and explain. \nA. Ankylospondylitis, B. Reiter's disease, C. Rheumatoid ahritis, D. Psoriatic ahritis", 'role': 'user'}, {'content': 'Answer: C \nExplanation: RA is seropositive . Uveitis is the most common ocular manifestation in patients affected by seronegative spondyloahropathies. Both genetic and environmental factors play a role in its pathogenesis. As it tends to affect the young adult population, it carries a significant personal and population burden. Immunomodulatory therapy that also acts as a coicosteroid sparing therapy can be effective in controlling chronic uveitis in patients with spondyloahropathy. Ref - Pubmed.com', 'role': 'assistant'}]