Determine the Value of Each Variable $\left[ \begin{array} { l } \mathrm { a } \\ 6 \\ 8 \end{array} \right] = \left[ \begin{array} { l } 8 \\ x \\ 8 \end{array} \right]$

Multiple Choice

Determine the value of each variable.
- $\left[ \begin{array} { l } \mathrm { a } \\ 6 \\ 8 \end{array} \right] = \left[ \begin{array} { l } 8 \\ x \\ 8 \end{array} \right]$

A) $a = 6 , x = 8$
B) $a = 8 , x = 6$
C) $a = 6 , x = 6$
D) $a = 8 , x = 8$