Solve the Problem $f ( x ) = \sqrt { x + 7 }$

Multiple Choice

Solve the problem.
-If $f ( x ) = \sqrt { x + 7 }$ and $g ( x ) = 8 x - 11$ , find $f ( g ( x ) )$

A) $2 \sqrt { 2 x - 1 }$
B) $8 \sqrt { x + 7 } - 11$
C) $8 \sqrt { x - 4 }$
D) $2 \sqrt { 2 x + 1 }$