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: Orthopaedics
[{'content': 'Erosion of bone is seen with all of the following except - \nSelect and explain. \nA. Gout, B. SLE, C. Psoriasis, D. Rheumatoid arthritis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: All inflammatory arthritis cause erosive arthritis, except SLE, which causes non-erosive arthritis.', 'role': 'assistant'}]