单项选择题

A.174.24.96:6088/Latex/latex.action?latex=Zih4KT1cbGVmdFx7XGJlZ2lue2FycmF5fXtjY314XjIsICZ4XGxlcSAtMiBcXHgrOSwgJi0y77yc%0D%0AeO%2B8nDIgXFwyXngsICZ4XGdlcSAyXGVuZHthcnJheX0%3D'
B.