Given below is a matrix A and an echelon form of A. Find bases for Col A and Nul A, and then state the dimensions of these subspaces. 1 4 3 -8 1 4 3 3 12 1 0 0 4 -7 A = 2 8 - 1 0 0 0 4 4 16 13 0 0 0 1 - 8 1 7 A basis for Col A is given by { - 1 13 (Use a comma to separate answers as needed.) The dimension of Col A is 3. (Type an integer.) A basis for Nul A is given by { }. (Use a comma to separate answers as needed.)

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