Find the Largest Open Interval Where the Function Is Changing $\quad f ( x ) = | x - 8 |$

Multiple Choice

Find the largest open interval where the function is changing as requested.
-Decreasing $\quad f ( x ) = | x - 8 |$

A) $( 8 , \infty )$
B) $( - \infty , - 8 )$
C) $( - 8 , \infty )$
D) $( - \infty , 8 )$