Let $f ( x ) = \frac { - 4 x ^ { 2 } } { x + 6 }$

Multiple Choice

Let $f ( x ) = \frac { - 4 x ^ { 2 } } { x + 6 }$ The set of all horizontal asymptotes of ƒ is

A) $\{ y = 6 \}$
B) $\{ y = 0 \}$
C) $\{ y = - 6 \}$
D) $\left\{ y = - \frac { 2 } { 3 } \right\}$
E) $\varnothing$