State where the function below is increasing or decreasing.

$f(x)=2x^3-24x-5$

On what interval$($s$)$ is $f$ increasing or decreasing?

A$.f$ is increasing on $(-,-2)$ and $(2,).f$ is decreasing on $(-2,2).$

B$.f$ is increasing on $(-,0).f$ is decreasing on $(0,).$

C$.f$ is increasing on $(-2,2).f$ is decreasing on $(-,-2)$ and $(2,)$

D$.f$ is never increasing. $f$ is decreasing on $(-,).$

E$.f$ is increasing on $(0,).f$ is decreasing on $(-,0).$

F$.f$ is increasing on $(-,).f$ is never decreasing.