Let $f ( x ) = \frac { 3 } { x + 1 }$

Multiple Choice

Let $f ( x ) = \frac { 3 } { x + 1 }$ Which of the following is equal to $\lim _ { x \rightarrow 1 } \frac { f ( x ) - f ( 1 ) } { x - 1 }$ ?

A) $- \frac { 3 } { 4 }$
B) $- \frac { 3 } { 2 }$
C) $\frac { 3 } { 4 }$
D) $\frac { 3 } { 2 }$
E) Does not exist