Food supplies in the flood-stricken area ______. We must act immediately before there’s none left.

A．have run out

B．are running out

C．have been run out

D．are being run out

以政府调研员的身份，用不超过350字的篇幅，提出解决给定资料所反映问题的方案。要有条理地说明，要体现针对性和可操作性。