Perform the Indicated Operation $( 3 \sqrt { x + 3 } - 3 ) ^ { 2 }$

Multiple Choice

Perform the indicated operation. Simplify, if possible. $( 3 \sqrt { x + 3 } - 3 ) ^ { 2 }$

A) $9 x + 36$
B) $9 x + 36 - 18 \sqrt { x + 3 }$
C) $9 x + 27$
D) $9 x + 36 - 9 \sqrt { x + 3 }$