Find the Indicated Matrix $\mathrm { A } = \left[ \begin{array} { r r } 2 & - 1 \\ 7 & 9 \end{array} \right]$

Multiple Choice

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

A) $\left[ \begin{array} { l r } 7 & 4 \\ 11 & 13 \end{array} \right]$
B) $\left[ \begin{array} { l l } - 24 & - 18 \\ - 30 & - 34 \end{array} \right]$
C) $\left[ \begin{array} { r r } 16 & - 10 \\ 2 & 10 \end{array} \right]$
D) $\left[ \begin{array} { r r } - 3 & - 6 \\ 3 & 5 \end{array} \right]$