Determine whether a matrix is in row-echelon form only (REF only), reduced row-echelon form (RREF), or neither: 3.10. For the matrices below, state whether the matrix is in row-echelon form only (REF only), reduced row-echelon form (RREF), or nei- ther: 100 1 2 0 0 1 0 (a) 0 1 0 (b) 0 1 0 (c) 0 1 0 (d) 0 0 1 001 100 100 1 5 2 1 3 4 (e) 0 0 1 (f) 0 0 0 (g) 0 1 000 1 0 3 1 [] (i) (j) 0124 001 000 1 14 00 -7 5 5 0 13 2 000 -3 1 (h) 0 0 0 0 00 00 000 1005 (k) 0 0 1 3 0 1 0 4 (1) 1 2 0 3 0 0 0 1 1 0 0000 1 00000 (m) 1 3 0 20 1 0 2 2 0 00001 100 0 0 0