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: Pathology
NANA antibody is seen in - 
Select and explain. 
A. Sarcoidosis, B. Tuberculosis, C. Leprosy, D. Carcinoid
A: Sarcoidosis
Answer: A: Sarcoidosis 
Explanation: Ans. is 'a' i.e., Sarcoidosiso Sarcoidosis is a chronic multisystem disorder characterized by an exaggerated cellular immone response to antigens with the production of various antibodies including rheumatoid factor and antinuclear antibodies (ANA). o Anti ds DNA may be positive that can cause to glomerulonephritis (as occurs in SLE).