Which of following is not true about nonalcoholic fatty liver disease(NAFLD)

A. The major histologic features of NAFLD include steatosis,steatohepatitis and variable degrees of fibrosis(cirrhosis)

B. Elevation of serum alkaline phosphatase is the most common manifestation of steatohepatitis

C. Liver biopsy is essential for establishing the diagnosis and determining disease activity

D. Obesity,type Ⅱ diabetes mellitus,and hyperlipidemia are most common risk factors

E. Currently,NAFLD is the most common type of liver disease