onsider the following three matrices 1 0 0 (1 0 C = 0 0 1 0 1 0 0 0 1 0, 0. 0 0 1 1 A = 0 0 B =0 1 2 0 0 1 1 0 0 0 1 atrix C is in RREF OTrue OFalse is an elementary matrix OTrue OFalse atrix B is invertible DTrue OFalse is an elementary matrix OTrue OFalse - = A OTrue OFalse atrix B is in REF OTrue OFalse atrix B is not in RREF OTrue OFalse is an elementary matrix OTrue OFalse atrix A is in REF OTrue OFalse RC:. 5y

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