Consider the following statements regarding classic polyarteritis nodosa - (1) it is multi system necrotising vasculitis . (2) Small and medium vessels are involved . (3) Pulmonary artery involvement is a characteristic features . (4) Upto 30% patients may show positive test for Hepatitis B surface antigen .

• A. 1 and 2 are correct
• B. 2 and 3 are correct
• C. 1,2 and 4 are correct
• D. 2,3 and 4 are correct