Provide an Appropriate Response $$\left[ \begin{array} { r r r | r } 1 & 11 & - 7 & - 22 \\0 & 1 & 9 & 26 \\0 & - 15 & 5 & 27\end{array} \right]$$

Multiple Choice

Provide an appropriate response.
-Suppose that you are solving a system of three linear equations by the Gauss-Jordan method and obtain the following augmented matrix. $$\left[ \begin{array} { r r r | r } 1 & 11 & - 7 & - 22 \\0 & 1 & 9 & 26 \\0 & - 15 & 5 & 27\end{array} \right]$$
What row operation would you perform next?

A) Add 15 times row 1 to 11 times row 3 to obtain a zero in the third row, second column position.
B) Add row 1 to row 2.
C) Multiply row 1 by $\frac { 1 } { 11 }$ .
D) Multiply row 2 by 1 .