Evaluate the Function $f ( x ) = \log _ { 2 } x$

Multiple Choice

Evaluate the function $f ( x ) = \log _ { 2 } x$ at $x = \frac { 1 } { 4 }$ without using a calculator.

A) $- 1$
B) $- 2$
C) $- 3$
D) 4
E) $\frac { 1 } { 4 }$