Suppose That You Are Solving a System of Three Linear $$\left[ \begin{array} { r r r | r } 1 & - 11 & - 13 & - 30 \\0 & - 14 & - 3 & 1 \\0 & 5 & - 9 & - 26\end{array} \right]$$

Multiple Choice

Suppose that you are solving a system of three linear equations by the Gauss-Jordan method and obtain the following augmented matrix. $$\left[ \begin{array} { r r r | r } 1 & - 11 & - 13 & - 30 \\0 & - 14 & - 3 & 1 \\0 & 5 & - 9 & - 26\end{array} \right]$$
What row operation would you perform next?

A) Multiply row 1 by $- \frac { 1 } { 11 }$ .
B) Add $- 5$ times row 1 to $- 11$ times row 3 to obtain a zero in the third row, second column position.
C) Add row 1 to row $2 .$
D) Multiply row 2 by $- \frac { 1 } { 14 }$ .