Autoantibodies Ani Ro and Anti La are completely absent
in: (A) Systemic Lupus erythematosus, (B) Sjogren's syndrome, (C) Diffuse Scleroderma, (D) Rheumatoid arthritis
Answer is D. Decreasing order of frequency of finding Anti - Ra (or SSa) & Anti- La (or SSb) antibodies is Sjogren's syndrome, SLE, Systemic sclerosis. SSa antibodies may be occasionally found but SSb antibodies may be totally absent in rheumatoid arthritis.