Use Radical Notation to Rewrite the Expression $16 ^ { 1 / 4 }$

Multiple Choice

Use radical notation to rewrite the expression. Simplify, if possible.
- $16 ^ { 1 / 4 }$

A) 4
B) $\frac { 1 } { 2 }$
C) 2
D) $- \sqrt [ 4 ] { 2 }$