Write the Domain in Interval Notation $$k ( x ) = \frac { x + 9 } { x - 4 }$$

Multiple Choice

Write the domain in interval notation.
- $$k ( x ) = \frac { x + 9 } { x - 4 }$$

A) $( - \infty , 9 ) \cup ( 9 , \infty )$
B) $( - \infty , - 4 ) \cup ( - 4 , \infty )$
C) $( - \infty , 4 ) \cup ( 4 , \infty )$
D) $( - \infty , - 9 ) \cup ( - 9 , \infty )$