Row reduce the matrix to reduced echelon form. Identify the pivot positions in the final matrix and in the original matrix, and list the pivot columns. 1 2 4 5 2 4 5 7 4 5 4 2 Row reduce the matrix to...

Extracted text: Row reduce the matrix to reduced echelon form. Identify the pivot positions in the final matrix and in the original matrix, and list the pivot columns. 1 2 4 5 2 4 5 7 4 5 4 2 Row reduce the matrix to reduced echelon form and identify the pivot positions in the final matrix. The pivot positions are indicated by bold values. Choose the correct answer below. O A. С. D. 10 0 10 0 0 10 0 - 1 10 0 - 3 - 1 0 1 0 2 0 10 0 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 2 0 0 1 Identify the pivot positions in the original matrix. The pivot positions are indicated by bold values. Choose the correct answer below. OA. Oc. D. 1 2 4 5 1 2 4 5 1 2 4 5 1 2 4 5 2 4 5 7 2 4 5 7 2 4 5 7 2 4 5 7 4 5 4 2 4 5 4 2 45 4 2 4 5 4 2 List the pivot columns. Select all that apply. A. Column 2 B. Column 1 C. Column 4 D. Column 3 B. B.