If one of the angles of a triangle is $120^{\circ}$, then the angle between the bisectors of the other two angles can be

Question

$\begin{array}{1 1} (a)\; 50^{\circ} \\ (b)\; 65^{\circ} \\ (c)\; 145^{\circ} \\(d)\; 150^{\circ} \end{array}$