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

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 = 2.
E) ƒ is concave downward on $( 1 , \infty ) .$