单项选择题

A.ALT、AST<500U/L,AST/ALT>2
B.ALT、AST>500U/L,AST/ALT>2
C.ALT、AST<500U/L,AST/ALT<2
D.ALT、AST>500U/L,AST/ALT<2
E.ALT、AST<500U/L,ALT/AST>2