Use Any Method to Find the Slope of the Tangent $f ( x ) = \frac { 1 } { x ^ { 2 } }$

Multiple Choice

Use any method to find the slope of the tangent line to the graph of the function $f ( x ) = \frac { 1 } { x ^ { 2 } }$ at the point that has x-coordinate $x = 5$ .

A) -125
B) 25
C) $\frac { 1 } { 25 }$
D) $- \frac { 2 } { 125 }$
E) $\frac { 1 } { 125 }$