Let $f ( x ) = \frac { \frac { 1 } { x } - 1 } { 1 - x }$

Multiple Choice

Let $f ( x ) = \frac { \frac { 1 } { x } - 1 } { 1 - x }$ Which of the following is true for $\lim _ { x \rightarrow 1 } f ( x )$ ?

A) -1
B) 0
C) $\frac { 1 } { 2 }$
D) 1
E) Does not exist