In chronic hepatitis C. which of the responses is (are) correct?

pharmacy

1  peginterferon is preferred to interferon as pegylation increases the persistence of interferon in blood

2  liver damage may occur, requiring a liver transplant to prevent death from cirrhosis

3   the aim of treatment is to achieve clearance of the virus which is sustained for at least 1 month after

A    if 1, 2 and 3 are correct

B    if 1 and 2 only are correct

C    if 2 and 3 only are correct

D    if 1 only is correct

E    if 3 only is correct