Write the Domain in Interval Notation $$f ( x ) = \log _ { 3 } \left( x ^ { 2 } - 9 \right)$$

Multiple Choice

Write the domain in interval notation.
- $$f ( x ) = \log _ { 3 } \left( x ^ { 2 } - 9 \right)$$

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