Apply the Power Property of Logarithms $\ln \sqrt [ 8 ] { x ^ { 9 } }$

Multiple Choice

Apply the power property of logarithms.
- $\ln \sqrt [ 8 ] { x ^ { 9 } }$

A) $\frac { 9 \ln x } { 8 \ln x }$
B) $9 \ln x - 8 \ln x$
C) $\frac { 9 } { 8 } \ln x$
D) $\frac { 1 } { 8 } \ln x \cdot 9 \ln x$