Evaluate as Indicated $f ( a + 2 )$ For the Given Function

Multiple Choice

Evaluate as indicated.
-Find $f ( a + 2 )$ for the given function.
$$f ( x ) = \sqrt { x - 5 }$$

A) $\sqrt { x + a - 3 }$
B) $\sqrt { a - 3 }$
C) $\sqrt { a - 10 }$
D) $\sqrt { x + a - 10 }$