Find the Derivative of the Following Function $y = 9 \ln \left( x ^ { 8 } - 4 \right)$

Multiple Choice

Find the derivative of the following function. $y = 9 \ln \left( x ^ { 8 } - 4 \right)$

A) $\frac { 9 } { x ^ { 8 } - 4 }$
B) $\frac { 8 x ^ { 7 } } { x ^ { 8 } - 4 }$
C) $\frac { 8 } { x ^ { 8 } - 4 }$
D) $\frac { 72 x ^ { 7 } } { x ^ { 8 } - 4 }$
E) $\frac { 9 x ^ { 7 } } { x ^ {8 } - 4 }$