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
Hepatitis B associated with ? 
Select and explain. 
A. Wegener's granulomatosis, B. Systemic lupus erythmatosus, C. Polyaeritis nodosa, D. Sjogren syndrome
C: Polyaeritis nodosa
Answer: C: Polyaeritis nodosa 
Explanation: 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.