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': 'Joint erosions are not a feature of \nSelect and explain. \nA. Rheumatoid ahritis, B. Psoriatic ahritis, C. Gout, D. Systemic lupus ehematosus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ref Semantischolar.org', 'role': 'assistant'}]