单项选择题

下列积分值为零的是(    )
   A.    B.  C.  D.

A.B.174.24.96:6088/Latex/latex.action?latex=XGludF97LTF9XjJ4ZHg%3D'
C.D.174.24.96:6088/Latex/latex.action?latex=XGludF97LTF9XjF4c2luXjJ4ZHg%3D'
E.F.174.24.96:6088/Latex/latex.action?latex=XGludF97LTF9XjF4c2lueGR4'
G.H.174.24.96:6088/Latex/latex.action?latex=XGludF97LTF9XjF4XjJzaW5eMnhkeA%3D%3D'