Find the Indicated Composite Function $f ( x ) = \frac { 1 } { x }$

Multiple Choice

Find the indicated composite function. f (x + 6) where $f ( x ) = \frac { 1 } { x }$

A) f (x + 6) = $x + 6 + \frac { 1 } { x }$
B) f (x + 6) = $\frac { 1 } { x + 6 }$
C) f (x + 6) = $1 + \frac { 3 } { x }$
D) f (x + 6) = $\frac { 1 } { x } + 6$