Evaluate ?F(16)if $$f ( x ) = \sqrt { x + 9 } + 1$$

Evaluate ?f(16) if $$f ( x ) = \sqrt { x + 9 } + 1$$ .

A) f(16) = 5
B) f(16) = 7
C) f(16) = 4
D) f(16) = 8
E) f(16) = 6