Simplify the Expression Without Using a Calculator $\log _ { 1 / 2 } \left( \frac { 1 } { 16 } \right)$

Multiple Choice

Simplify the expression without using a calculator.
- $\log _ { 1 / 2 } \left( \frac { 1 } { 16 } \right)$

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