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don't need any explanation, just give me the mcq answer quickly please. I3=Identity matrix of 3 by 3 matrix If A is an nxn matrix,

don't need any explanation, just give me the mcq answer quickly please.

I3=Identity matrix of 3 by 3 matrix

If A is an nxn matrix, which of the following is not true statement: * O A is invertible. O Ax=0 has only the trivial solution. 0 The row echelon form of A is l. O The reduced row echelon form is l. 1 point

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