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: Medicine
[{'content': "All are seronegative (spondyloepiphyseal) arthritis with ocular manifestations, except - \nSelect and explain. \nA. Ankylospondilitis, B. Ritter's disease, C. Rheumatoid arthritis, D. Psoriatic arthritis", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]