Provide an Appropriate Response $- 2 R _ { 1 } + R _ { 4 }$

Multiple Choice

Provide an appropriate response.
-Suppose that you are solving a system of 4 linear equations in 4 variables by the Gauss-Jordan method. If you use the transformation $- 2 R _ { 1 } + R _ { 4 }$ , which row or rows of the augmented matrix, if any, will change?

A) Row 1
B) Rows 1 and 4
C) Row 4
D) None