Find the Indicated Matrix $A = \left[ \begin{array} { r r r } 4 & - 6 & 4 \\ 8 & - 8 & - 2 \\ 1 & 6 & 6 \end{array} \right]$

Multiple Choice

Find the indicated matrix.
-Let $A = \left[ \begin{array} { r r r } 4 & - 6 & 4 \\ 8 & - 8 & - 2 \\ 1 & 6 & 6 \end{array} \right]$ and $B = \left[ \begin{array} { r r r } 3 & 6 & 2 \\ 1 & 0 & - 3 \\ - 2 & 8 & - 6 \end{array} \right]$ . Find $A + B$ .

A) $\left[ \begin{array} { r r r } 9 & 12 & 6 \\ 7 & - 8 & - 5 \\ - 1 & 14 & 0 \end{array} \right]$
B) $\left[ \begin{array} { r r r } 7 & 0 & 6 \\ 7 & - 8 & 1 \\ 1 & 14 & 0 \end{array} \right]$
C) $\left[ \begin{array} { r r r } 7 & 0 & 6 \\ 9 & - 8 & - 5 \\ - 1 & 14 & 0 \end{array} \right]$
D) $\left[ \begin{array} { r r r } 9 & 12 & 6 \\ 9 & - 8 & 1 \\ 1 & 14 & 0 \end{array} \right]$