Perform the Requested Operation on the Given Function $$f ( x ) = \sqrt { 2 x + 3 } , g ( x ) = \sqrt { 4 x - 25 }$$

Multiple Choice

Perform the requested operation on the given function.
- $$f ( x ) = \sqrt { 2 x + 3 } , g ( x ) = \sqrt { 4 x - 25 }$$
Find $( f g ) ( x )$ .

A) $( 2 x - 5 ) ( \sqrt { 2 x + 3 } )$
B) $( 2 x + 3 ) ( 4 x - 25 )$
C) $( 2 x + 3 ) ( 2 x - 5 )$
D) $( \sqrt { 2 x + 3 } ) ( \sqrt { 4 x - 25 } )$