(a) State which of the following matrices are in row-reduced form: /0 0 /1 0 4 -1 A = 0 1 012-2 10 00 1 3 1) 20 B 7 - 3 C = 0 0 -1 0 2 0 1 -1 00 0 For each matrix that is not in row-reduced form, explain why not and determine its row-reduced form. L.S det 80 AMT

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