Identify the Intervals Where the Function Is Changing as Requested $( - \infty , 3 )$

Multiple Choice

Identify the intervals where the function is changing as requested.
-Decreasing

A) $( - \infty , 3 )$
B) $( - \infty , - 2 )$
C) $( 0,3 )$
D) $( 0 , - 2 )$