Algebra (1 point) Which of the following statements are true? DA If the columns of an m x n matrix A span R", then the equation Ax = b is consistent for each bin R". B. Every matrix equation Ax = b corresponds to a vector equation with the same solution set. C. The equation Axb is referred to as a vector equation. 5. A vector b is a linear combination of the columns of a matrix A if and only if the equation Axb has at least one solution. E. If the augmented matrix [ A b] has a pivot position in every row, then the equation Ax = b is inconsistent. OF Any linear combination of vectors can always be written in the form Ax for a suitable matrix A and vector x.