The Function F Is One-To-One $$f ( x ) = x ^ { 2 } - 1 , x \geq 0$$

Multiple Choice

The function f is one-to-one. Find its inverse.
- $$f ( x ) = x ^ { 2 } - 1 , x \geq 0$$

A) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \sqrt { \mathrm { x } } + 1 , \mathrm { x } < 0$
B) $f ^ { - 1 } ( x ) = \sqrt { x + 1 } , x \geq - 1$
C) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \sqrt { \mathrm { x } - 1 } , \mathrm { x } \geq 1$
D) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \sqrt { \mathrm { x } } + 1 , \mathrm { x } \geq 0$