Find the Domain of the Rational Function $$r ( x ) = \frac { x ^ { 2 } - 11 x + 28 } { x ^ { 2 } - 7 x }$$

Multiple Choice

Find the domain of the rational function.
- $$r ( x ) = \frac { x ^ { 2 } - 11 x + 28 } { x ^ { 2 } - 7 x }$$

A) All real numbers except 0 and 7 .
B) All real numbers except 0 and $- 7$ .
C) All real numbers except $- 7$ and 7 .
D) All real numbers except 0 .