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 3 5 -8 1 3 4 6 2 6 1 7 007 -6 A = 4 12-2 11 0 0 0 7 6 18 0 18 0 0 0 0 A basis for Col A is given by D. (Use a comma to separate answers as needed.)

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