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

Multiple Choice

Find the slant asymptote, if any, of the graph of the rational function.
- $$f ( x ) = \frac { x ^ { 2 } - 5 x + 4 } { x + 8 }$$

A) $y = x - 13$
B) $\mathrm { y } = \mathrm { x } + 9$
C) $x = y + 5$
D) no slant asymptote