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
Anti ds DNA antibody is specific for 
Select and explain. 
A. SLE, B. Systemic sclerosis, C. CREST syndrome, D. Sjogren's syndrome
A: SLE
Answer: A: SLE 
Explanation: Ref image- Harrison's internal medicine 20e p2517