Let $f ( x ) = \frac { | x | } { x }$

Multiple Choice

Let $f ( x ) = \frac { | x | } { x }$ Which of the following is true?

A) ƒ is defined at 0.
B) ƒ is discontinuous at -1.
C) ƒ has a removable discontinuity at 0.
D) ƒ has a removable discontinuity at -1.
E) ƒ has a jump discontinuity at 0.