Determine Which of the Rational Functions Given Below Has the Following

Multiple Choice

Determine which of the rational functions given below has the following feature(s) .
-The horizontal asymptote is $y = 5$

A) $f ( x ) = \frac { x + 5 } { x + 9 }$
B) $f ( x ) = \frac { 5 x ^ { 2 } - 1 } { x + 9 }$
C) $f ( x ) = \frac { 5 } { x - 5 }$
D) $f ( x ) = \frac { 5 x - 1 } { x + 9 }$