A.\( \left(-\infty ; -\frac{\sqrt{3}}{6}\right\rangle \)

B.\( (-\infty ; 0\rangle \)

C.\( \left\langle -\frac{\sqrt{3}}{6}; \frac{\sqrt{3}}{6}\right\rangle \)

D.\( \left\langle \frac{\sqrt{3}}{6}; +\infty \right ) \)