Find the Values of the Variables for Which the Statement $\left[ \begin{array} { l } \mathrm { a } \\ 7 \\ 5 \end{array} \right] = \left[ \begin{array} { l } 5 \\ \mathrm { x } \\ 5 \end{array} \right]$

Multiple Choice

Find the values of the variables for which the statement is true, if possible.
- $\left[ \begin{array} { l } \mathrm { a } \\ 7 \\ 5 \end{array} \right] = \left[ \begin{array} { l } 5 \\ \mathrm { x } \\ 5 \end{array} \right]$

A) $\mathrm { a } = 7 ; \mathrm { x } = 5$
B) $a = 7 ; x = 7$
C) $a = 5 ; x = 7$
D) $a = 5 ; x = 5$