Find the Derivative of the Following Function $y = 8 ^ { 9 x + 1 }$

Multiple Choice

Find the derivative of the following function. $y = 8 ^ { 9 x + 1 }$

A) $y ^ { \prime } = ( 8 \ln 9 ) 8 ^ { 9 x + 1 }$
B) $y ^ { \prime } = ( 9 \ln 8 ) 8 ^ { 9 x + 1 }$
C) $y ^ { \prime } = ( \ln 9 ) ^ { 9 x + 1 }$
D) $y ^ { \prime } = ( \ln 8 ) 8 ^ { 9 x + 1 }$
E) $y ^ { \prime } = ( \ln 72 ) 8 ^ { 9 x + 1 }$