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

Multiple Choice

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

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