Find the Domain of the Rational Function $f ( x ) = \frac { 6 x - 5 } { 7 }$

Find the domain of the rational function.
$f ( x ) = \frac { 6 x - 5 } { 7 }$

A) $\{ x \mid x \text { is a real number and } x \neq 7 \}$
B) $\{ x \mid x \text { is a real number and } x \neq 0 \}$
C) $\left\{ x \mid x \text { is a real number and } x \neq \frac { 5 } { 6 } \right\}$
D) $\{ x \mid x \text { is a real number } \}$