Write an Equivalent Expression in Exponential Form $$8 x - 56 = \log _ { x } 1$$

Multiple Choice

Write an equivalent expression in exponential form.
- $$8 x - 56 = \log _ { x } 1$$

A) $\{ 7 \}$
B) $\{ 448 \}$
C) $\{ 48 \}$
D) $\left\{ \frac { 1 } { 7 } \right\}$