Let $f ( x ) = \frac { 3 } { x ^ { 2 } }$

Multiple Choice

Let $f ( x ) = \frac { 3 } { x ^ { 2 } }$ Which of the following is equal to $\lim _ { h \rightarrow 0 } \frac { f ( - 2 + h ) - f ( - 2 ) } { h }$ ?

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