Give the Equation of the Horizontal Asymptote, If Any, of the Function

Multiple Choice

Give the equation of the horizontal asymptote, if any, of the function.
- $$f ( x ) = \frac { 16 x ^ { 5 } - 4 } { x - x ^ { 3 } }$$

A) $y = - 16$
B) $y = - 1 , y = 1$
C) $y = 0$
D) no horizontal asymptotes