右乘初等矩阵
相当于进行下列哪种初等变换( )。\n \n \n \n \n \n \n \n \n \n \n A.\n 第一行与第二行互换 \n
\n \n\n \n \n \n B.\n 第二行与第三行互换\n
\n \n\n \n \n \n C.\n 第一列与第二列互换 \n
\n \n\n \n \n \n D.\n 第二列与第三列互换\n