Determine the Open Intervals on the X-Axis on Which the Function

Multiple Choice

Determine the open intervals on the x-axis on which the function is increasing and those on which it is decreasing.

A) increasing on (- $\infty$ , 3) and decreasing on (3, $\infty$ )
B) increasing on (- $\infty$ , 0) and decreasing on (0, $\infty$ )
C) increasing on (0, 3) and decreasing on (- $\infty$ , 0) and (3, $\infty$ )

D) decreasing on (0, 3) and increasing on (- $\infty$ , 0) and (3, $\infty$ )
E) decreasing on (- $\infty$ , 3) and increasing on (3, $\infty$ )