[o 1 [1 2 0 1] 1] Consider the matrices A = |0 0 1,B = |0 0 1 0, and lo o lo o o 1 [1 0 2 3 C = |0 1 0 -2 Lo o 1 4 O All of them are in row echelon form. B and C are in reduced row echelon O form,...

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Extracted text: [o 1 [1 2 0 1] 1] Consider the matrices A = |0 0 1,B = |0 0 1 0, and lo o lo o o 1 [1 0 2 3 C = |0 1 0 -2 Lo o 1 4 O All of them are in row echelon form. B and C are in reduced row echelon O form, while A is not in row echelon form. A and C are in row echelon form, O while B is in reduced row echelon form. O None of these. A and B are in row echelon form, O while C is in reduced row echelon form.