Identify the Transformation Of $f ^ { \prime } ( x ) = 2 ^ { x }$

Multiple Choice

Identify the transformation of $f ^ { \prime } ( x ) = 2 ^ { x }$ . $h ( x ) = 2 ^ { x - 6 }$

A) a shift of 6 units downward
B) a shift of 6 units to the left
C) a reflection about the line x=6
D) a shift of 6 units to the right
E) a shift of 6 units upward