A.\( (-\infty ,-1)\cup \left \langle \frac{1}{3},+\infty \right ) \)

B.\( \left (-1,\frac{1}{3} \right ) \)

C.\( (-\infty ,-1)\cup \left (\frac{1}{3},+\infty \right ) \)

D.\( \left \langle -1,\frac{1}{3} \right \rangle \)