若要使用顺序高斯消去法求解方程组<img src="/lqwvjeImg/04/04efbdcdc5a72627f4c27bfbe0ead093.png"style="width:49px;height:19px;">,顺序消元过程能进行到底的充要条件是系数矩阵A满足( )。<br>·A的各阶顺序主子式不为零<br>· <img src="/lqwvjeImg/f4/f45575da50876b66795bcea18ea9c8bc.png"style="width:60px;height:21px;"><br>· <img src="/lqwvjeImg/fe/fe5634f0b8aef2a121b5ca71da74977a.png"style="width:124px;height:24px;"><br>· <img src="/lqwvjeImg/69/694dd576af10c794c33a3d9f7d9c7cd1.png"style="width:45px;height:27px;">