Find the Domain of the Function $h ( x ) = \ln \left( x ^ { 2 } - 9 \right)$

Multiple Choice

Find the domain of the function. $h ( x ) = \ln \left( x ^ { 2 } - 9 \right)$

A) $( - \infty , \infty )$
B) $( - \infty , - 3 ) \cup ( 3 , \infty )$
C) $( - 3 , \infty )$
D) $( - \infty , - 9 ) \cup ( 9 , \infty )$
E) none of these