This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': "ANA (antinuclear antibody) is seen in all except- \nSelect and explain. \nA. SLE, B. RA, C. Sjogren's syndrome, D. Systemic sclerosis", 'role': 'user'}, {'content': "Answer: B \nExplanation: harshmohan textbook of pathology 7th edition. *in SLE ANA present in 90%of cases and are used as screening test. *in systemic sclerosis ANA detected in majority of cases. *sjogren' s syndrome presence of ANA in 90%cases. *in rheumatoid ahritis anti CCP antibodies for evaluation of association of RA factor with HLA", 'role': 'assistant'}]