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: Skin
Which of the following autoantibodies is most suggestive of subacute cutaneous lupus erythematosus? 
Select and explain. 
A. anti ds DNA, B. anti Ro, C. anti La, D. U1 RNP
B: anti Ro
Answer: B: anti Ro 
Explanation: Antibodies to the Ro/SS-A antigen are usually always found in SCLE. NB: anti ds DNA- SLE, anti La - Rowell's & Sjogren's syndrome, U1RNP- mixed connective disease Ref: Rook's textbook of dermatology, Edition-8, Page-51.22.