Solve the Problem $A = \left[ \begin{array} { r r } - 1 & 4 \\ 0 & 4 \\ 9 & - 4 \end{array} \right]$

Multiple Choice

Solve the problem.
-Let $A = \left[ \begin{array} { r r } - 1 & 4 \\ 0 & 4 \\ 9 & - 4 \end{array} \right]$ and $B = \left[ \begin{array} { r r } 7 & 2 \\ 17 & 4 \\ 3 & 2 \end{array} \right]$ . Find $A - B$ .

A)
$\left[ \begin{array} { r r } - 8 & 2 \\ - 17 & 0 \\ 6 & - 6 \end{array} \right]$
B)
$\left[ \begin{array} { r r } 1 & 5 \\ 7 & 8 \\ 12 & 0 \end{array} \right]$
C)
$\left[ \begin{array} { r r } 1 & 2 \\ 7 & 0 \\ 6 & - 2 \end{array} \right]$
D)
$\left[ \begin{array} { r r } 3 & - 3 \\ 7 & 0 \\ - 6 & 6 \end{array} \right]$