【单选题】【消耗次数:1】
三阶矩阵A的特征值为-2,1,3.则下列矩阵中非奇异矩阵是( )。
2I-A
2I+A
I-A
A-3I
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①  <img class=jc-formula data-tex=2I+A src=https://huaweicloudobs.ahjxjy.cn/5A8258D6D8D57E9D4202E2D876248700.png style=vertical-align: middle;/>
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