Find the Domain Of $f ( x ) = \frac { x ^ { 2 } - 9 } { \sqrt { x + 3 } }$

Multiple Choice

Find the domain of $f ( x ) = \frac { x ^ { 2 } - 9 } { \sqrt { x + 3 } }$

A) Domain: $[ - 3 , \infty )$
B) Domain: $( - 3 , \infty )$
C) Domain: $( - \infty , \infty )$
D) Domain: $( - \infty , - 3 ) \cup ( - 3 , \infty )$