This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Anti ds DNA antibiodies are commonly seen in \nSelect and explain. \nA. SLE, B. Scleroderma, C. Dermatomyositis, D. Rheumatoid ahritis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Antibiodies to do DNA and the so called Smith antigens are viually diagnostic of SLE .Anti ds-,DNA is common in SLE (40-60%,) ref Robbins 9/e p 128', 'role': 'assistant'}]