Determine the Function Value $f ( x ) = \log _ { a } ( x )$

Multiple Choice

Determine the function value.
-Suppose $f ( x ) = \log _ { a } ( x )$ and $f ( 5 ) = 2$ . Find $f ( 125 )$ .

A) 12
B) $\sqrt { 5 }$
C) 3
D) 6