Write the Expression as One Logarithm $\left( \frac { 1 } { y } \right)$

Multiple Choice

Write the expression as one logarithm. 9ln ( x ) - 7ln $\left( \frac { 1 } { y } \right)$ - 4ln ( xy )

A) ln ( x ⁹ - y ⁷ - ( xy ) ⁴ )
B) ln ( 9x - 7y - 4xy )
C) ln ( x ³ y ⁵ )
D) ln ( x ⁵ y ³ )