Simplify the Expression $\sqrt [ 4 ] { ( - 4 ) ^ { 4 } }$

Multiple Choice

Simplify the expression. Include absolute value bars where necessary.
- $\sqrt [ 4 ] { ( - 4 ) ^ { 4 } }$

A) $- 4$
B) $| - 256 |$
C) $- | - 4 |$
D) 4