Let A be a matrix with linearly independent columns. Select the best statement. OA. The equation Ax = b has a solution for all b precisely when it is a square matrix. OB. The equation Ax = b has a solution for all b precisely when it has more columns than rows. OC. The equation Ax = b always has a solution for all b. OD. The equation Ax = b never has a solution for all b. OE. The equation Ax = b has a solution for all b precisely when it has more rows than columns. OF. There is no easy way to tell if Ax = b has a solution for all b. OG. none of the above

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