Food supplies in the flood-stricken area ______. We must act immediately before there’s nothing left.

A．have run out

B．are running out

C．have been run out

D．are being run out

讨论电流表安装，甲认为电流表一线柱与电池线柱连接，电流表线柱与电池与发电机输出线接，乙认为电流表线柱与电池线柱柱连接，电流表一线柱与发电机输出线柱接，你认为（）

A.甲对

B.乙对

C.甲乙都对

D.甲乙都不对