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 $f ( x ) = \frac { x ^ { 2 } - 9 } { x - 1 }$

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