For the Given Functions F and G , Find the Indicated

Multiple Choice

For the given functions f and g , find the indicated value.
- $f ( x ) = \sqrt { x + 2 } , \quad g ( x ) = 5 x$
$( f \circ g ) ( 1 )$

A) $\sqrt { 7 }$
B) $\sqrt { 15 }$
C) $5 \sqrt { 3 }$
D) $5 \sqrt { 15 }$