A middle aged female presents with polyarthritis with elevated rheumatoid factorANAanalevels, which among the following will help you to differentiate rheumatoid arthritis from SLE ?: (A) Soft tissue swelling at the proximal inter phalangial joint, (B) Juxta articular osteoporosis or X-ray, (C) Articular erosions on X-ray, (D) Elevated ESR
Answer is C. None