Determine the Domain of F $f ( x ) = \left\{ \begin{array} { l l } 2 x & \text { if } x \neq 0 \\ 5 & \text { if } x = 0 \end{array} \right.$

Multiple Choice

Determine the domain of f.
- $f ( x ) = \left\{ \begin{array} { l l } 2 x & \text { if } x \neq 0 \\ 5 & \text { if } x = 0 \end{array} \right.$

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