Let $f ( x ) = ( x - 2 ) ^ { 2 }$

Multiple Choice

Let $f ( x ) = ( x - 2 ) ^ { 2 }$ . Then $f ^ { \prime } ( x )$ is

A) $2 x - 4$
B) $2 x + 4$
C) $- 2 x - 4$
D) $- 2 x + 4$
E) $2 x + 8$