Determine the Domain Of $f ( x ) = \frac { x ^ { 2 } } { x ^ { 2 } + 25 }$

Multiple Choice

Determine the domain of $f ( x ) = \frac { x ^ { 2 } } { x ^ { 2 } + 25 }$ .

A) all real numbers except $x = - 25$
B) all real numbers except $x = - 5 \text { and } x = 5$
C) all real numbers except $x = - 5 \text { and } x = 1$
D) all real numbers except $x = 5$
E) all real numbers