Find All Values of the Variable for Which the Rational $$\frac { x ^ { 2 } - 49 } { x ^ { 2 } + 2 x - 24 }$$

Multiple Choice

Find all values of the variable for which the rational expression is undefined.
- $$\frac { x ^ { 2 } - 49 } { x ^ { 2 } + 2 x - 24 }$$

A) $- 7,7$
B) 0
C) $- 4,6$
D) $- 6,4$