Use the Change of Base Formula to Identify the Expression $\log _ { 9 } 7$

Multiple Choice

Use the change of base formula to identify the expression that is equivalent to $\log _ { 9 } 7$ .

A) $\frac { \log 7 } { \log 9 }$
B) $\frac { \log 9 } { \log 7 }$
C) $\frac { \ln 9 } { \ln 7 }$
D) $9 \log 7$