help..I only have 1 attempt left.

The answer above is NOT correct. (You have 5 attempts on this problem) Which of the following statements are true? Remember that a mathematical statement is said to be true if it is always true, under all circumstances. A. If the columns of an m x n matrix A span R. then the equation Ax - b is consistent for each b in Rm. B. The equation Ax = b is consistent if the augmented matrix | A | b] has a pivot position in every row. C. Every matrix equation Ax = b corresponds to a vector equation with the same solution set. D. The equation Ax = b is referred to as a vector equation. E. Any linear combination of vectors can always be written in the form Ax for a suitable matrix A and vector z. OF. The solution set of a linear system whose augmented matrix is | a1 a2 a3 | b ] is the same as the solution set of Ax = b, if A = [a1 a2 a3]