Write the Domain in Interval Notation $$r ( x ) = \frac { - 14 } { x ^ { 2 } + 81 }$$

Multiple Choice

Write the domain in interval notation.
- $$r ( x ) = \frac { - 14 } { x ^ { 2 } + 81 }$$

A) $( \infty , 0 ) \cup ( 0 , \infty )$
B) $( \infty , \infty )$
C) $( \infty , - 9 ) \cup ( 9 , \infty )$
D) $( - \infty , - 9 ) \cup ( - 9,9 ) \cup ( 9 , \infty )$