Determine the Value of Each Variable $$\left[ \begin{array} { l l } 8 & 4 \\x & 0\end{array} \right] = \left[ \begin{array} { r r } m - 4 & n + 4 \\5 & 0\end{array} \right]$$

Multiple Choice

Determine the value of each variable.
- $$\left[ \begin{array} { l l } 8 & 4 \\x & 0\end{array} \right] = \left[ \begin{array} { r r } m - 4 & n + 4 \\5 & 0\end{array} \right]$$

A) $\mathrm { m } = 0 ; \mathrm { n } = 12 ; \mathrm { x } = 0$
B) $m = 12 ; n = 0 ; x = 5$
C) $m = - 12 ; n = - 0 ; x = - 5$
D) $m = 8 ; n = 4 ; x = 5$