设线性方程组，则方程组有解的充分必要条件是（　）．

<img src、"http://oss.ouchn.cn/ddzx/N601/gongxue/jjsx/img/3-2/image093.png" alt="" align="middle">

<img src、"http://oss.ouchn.cn/ddzx/N601/gongxue/jjsx/img/3-2/image094.png" alt="" align="middle">

<img src、"http://oss.ouchn.cn/ddzx/N601/gongxue/jjsx/img/3-2/image095.png" alt="" align="middle">

<img src、"http://oss.ouchn.cn/ddzx/N601/gongxue/jjsx/img/3-2/image096.png" alt="" align="middle">