Find the Indicated Matrix And $\mathrm { C } = \left[ \begin{array} { r r } 1 & 8 \\ - 3 & 7 \end{array} \right]$

Multiple Choice

Find the indicated matrix.
-Let $\mathrm { A } = \left[ \begin{array} { l l } - 9 & - 1 \\ - 4 & - 2 \end{array} \right] , \mathrm { B } = \left[ \begin{array} { l l } - 3 & 5 \\ - 2 & 5 \end{array} \right]$ and $\mathrm { C } = \left[ \begin{array} { r r } 1 & 8 \\ - 3 & 7 \end{array} \right]$ . Find $\mathrm { A } + \mathrm { B } - \mathrm { C }$ .

A) $\left[ \begin{array} { l l } - 1 & 12 \\ - 9 & 10 \end{array} \right]$
B) $\left[ \begin{array} { c c } - 5 & 2 \\ - 5 & 0 \end{array} \right]$
C) $\left[ \begin{array} { r r } - 13 & - 4 \\ - 3 & - 4 \end{array} \right]$
D) $\left[ \begin{array} { r r } - 7 & - 14 \\ 1 & - 14 \end{array} \right]$