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': 'N ANA antibody is seen in - \nSelect and explain. \nA. Sarcoidosis, B. Tuberculosis, C. Leprosy, D. Carcinoid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is option1 Sarcoidosis is a chronic multisystem disorder characterized by an exaggerated cellular immune response to antigens with the production of various antibodies including rheumatoid factor and antinuclear antibodies (ANA). https:/ncbi.nlm.nih.gov.in', 'role': 'assistant'}]