Find the Horizontal Asymptote, If Any, of the Graph of the Rational

Multiple Choice

Find the horizontal asymptote, if any, of the graph of the rational function.
- $$f ( x ) = \frac { 10 x } { 5 x ^ { 2 } + 1 }$$

A) $\mathrm { y } = 0$
B) $\mathrm { y } = 2$
C) $\mathrm { y } = \frac { 1 } { 2 }$
D) no horizontal asymptote