<prompt> In Chronic Viral Hepatitis:Hepatitis A virus infection is a common cause inchildrenMorphological classification into Chronic ActiveHepatitis and Chronic Persistent Hepatitis areimpoantFatty change is pathognomic of Hepatitis C virusinfectionGrading refers to the extent of necrosis andinflammations  <response>: . Grading refers to the extent of necrosis andinflammations 