Use the Properties of Logarithms to Rewrite the Expression $\log _ { 8 } \left( \frac { \sqrt { 7 } } { 9 } \right)$

Multiple Choice

Use the properties of logarithms to rewrite the expression. Simplify the result if possible. Assume all variables represent positive real numbers.
- $\log _ { 8 } \left( \frac { \sqrt { 7 } } { 9 } \right)$

A) $\frac { \frac { 1 } { 2 } \log _ { 8 } 7 } { \log _ { 8 } 9 }$
B) $\sqrt { \log _ { 8 } 7 } - \log _ { 8 } 9$
C) $\log _ { 8 } \sqrt { 7 } + \log _ { 8 } 9$
D) $\frac { 1 } { 2 } \log _ { 8 } 7 - \log _ { 8 } 9$