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
[{'content': "Hepatitis B associated with ? \nSelect and explain. \nA. Wegener's granulomatosis, B. Systemic lupus erythmatosus, C. Polyaeritis nodosa, D. Sjogren syndrome", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Polyateritis nodosa The hepatitis B surface antigen is present in 25% of patients with Polyaeritis Nodosa. Hepatitis C antibody is present in patients with essential mixed cryoglobinuria and rarely in patients with poly aeritis nodosa.", 'role': 'assistant'}]