Identify the Elementary Row Operation Being Performed to Obtain the New

Multiple Choice

Identify the elementary row operation being performed to obtain the new row-equivalent matrix. Original $\mathrm { Mat } \mathrm { rix }~~~~~~~~~~$ New Row-Equivalent Matrix
$\left[ \begin{array} { c c c } 6 & - 7 & - 6 \\7 & 6 & - 1\end{array} \right]~~~~~$$\left[ \begin{array} { c c c } 20 & 5 & - 8 \\7 & 6 & - 1\end{array} \right]$

A) Add 2 times R1 to R2.
B) Add -2 times R2 to R1.
C) Add -2 times R1 to R2.
D) Add 2 times R1 to R1.
E) Add 2 times R2 to R1.