For the Given Function F(x), Find F-1(x) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \mathrm { x } + 5$

Multiple Choice

For the given function f(x) , find f-1(x) .
-f(x) = 5 - x

A) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \mathrm { x } + 5$
B) $f ^ { - 1 } ( x ) = \frac { x } { 5 }$
C) $f ^ { - 1 } ( x ) = x - 5$
D) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = 5 - \mathrm { x }$