Use a Change-Of-Base Formula to Rewrite the Logarithm in Terms $y = \log _ { 4 } x$

Multiple Choice

Use a change-of-base formula to rewrite the logarithm in terms of natural logarithms. $y = \log _ { 4 } x$

A) $y = 4 \ln x$
B) $y = \ln ( x - 4 )$
C) $y = \ln x - \ln 4$
D) $y = 4 ^ { x }$
E) $y = \frac { \ln x } { \ln 4 }$