The Largest Set on Which $f ( x ) = \frac { 5 x + 3 } { 5 x ^ { 2 } + 3 }$

Multiple Choice

The largest set on which $f ( x ) = \frac { 5 x + 3 } { 5 x ^ { 2 } + 3 }$ is continuous is

A) $( - \infty , \infty )$
B) $\left( - \infty , - \frac { 3 } { 5 } \right) \cup \left( - \frac { 3 } { 5 } , \infty \right)$
C) $\left( - \infty , \frac { 3 } { 5 } \right) \cup \left( \frac { 3 } { 5 } , \infty \right)$
D) $\left( - \infty , - \frac { 3 } { 5 } \right) \cup \left( \frac { 3 } { 5 } , \infty \right)$
E) $\left( - \infty , - \frac { 3 } { 5 } \right) \cup \left( - \frac { 3 } { 5 } , \frac { 3 } { 5 } \right) \cup \left( \frac { 3 } { 5 } , \infty \right)$