Add and Subtract Matrices
-Let $\mathrm { A } = \left[ \begin{array} { r r r } 4 & - 10 & 2 \\ 8 & - 12 & - 3 \\ 4 & 5 & 9 \end{array} \right]$

Multiple Choice

Add and Subtract Matrices
-Let $\mathrm { A } = \left[ \begin{array} { r r r } 4 & - 10 & 2 \\ 8 & - 12 & - 3 \\ 4 & 5 & 9 \end{array} \right]$ and $\mathrm { B } = \left[ \begin{array} { r r r } 0 & 10 & 3 \\ 4 & 0 & - 5 \\ - 5 & 8 & - 5 \end{array} \right]$ . Find $\mathrm { A } - \mathrm { B }$

A)
$\left[ \begin{array} { r r r } 4 & - 20 & - 1 \\ 4 & - 12 & 2 \\ 9 & - 3 & 14 \end{array} \right]$
B)
$\left[ \begin{array} { r r r } 4 & 0 & - 1 \\ 4 & - 12 & 2 \\ 1 & - 3 & 4 \end{array} \right]$
C)
$\left[ \begin{array} { r r r } 4 & 20 & - 1 \\ 4 & - 12 & 2 \\ 9 & 3 & 14 \end{array} \right]$
D)
$\left[ \begin{array} { r r r } 4 & 0 & 5 \\ 12 & - 12 & - 8 \\ - 1 & 13 & 4 \end{array} \right]$