Given That $f ( x ) = \sqrt [ 4 ] { x - 4 }$

Multiple Choice

Given that $f ( x ) = \sqrt [ 4 ] { x - 4 }$ and $g ( x ) = x ^ { 4 } + 4$ determine the value of the following (if possible) .
$( f \circ g ) ( 0 )$

A) 0
B) 2
C) 4
D) $x ^ { 4 } - 16$
E) not possible