Determine Which of the Following Is Not True for the Graph

Multiple Choice

Determine which of the following is not true for the graph of $f ( x ) = \frac { x } { x + 1 }$

A) ƒ has no relative maximum.
B) ƒ has no relative minimum.
C) ƒ has a vertical asymptote: x = -1.
D) ƒ has a horizontal asymptote: y = 1.
E) ƒ is concave downward on $( - \infty , - 1 )$