Find $\lim _ { x \rightarrow + \infty } f ( x )$

Multiple Choice

Find $\lim _ { x \rightarrow + \infty } f ( x )$ and $\lim _ { x \rightarrow - \infty } f ( x )$ . If the limiting value is infinite indicate whether it is + $\infty$ or - $\infty$ . f (x) = (8 - 3x) (x + 4)

A) - $\infty$
B) + $\infty$ .
C) - $\infty$ ,- $\infty$ .
D) + $\infty$ ,+ $\infty$