Determine Whether the Given Function Is One-To-One $$f ( x ) = ( x + 5 ) ^ { 2 }$$

Multiple Choice

Determine whether the given function is one-to-one. If so, find a formula for the inverse.
- $$f ( x ) = ( x + 5 ) ^ { 2 }$$

A) $f ^ { - 1 } ( x ) = \sqrt { x - 5 }$
B) $f ^ { - 1 } ( x ) = \sqrt { x } - 5$
C) Not a one-to-one function
D) $f ^ { - 1 } ( x ) = \frac { 1 } { \sqrt { x - 5 } }$