The value of $\large\frac{\cos 30^{\circ}+\sin 60^{\circ}}{1+ \cos 60^{\circ}+ \sin 30^{\circ}}$ is _______

Question

$\begin{array}{1 1}(A) \; \large\frac{3}{2} \\(B)\;\large\frac{2}{3} \\(C)\;\large\frac{2}{\sqrt 3} \\(D)\;\large\frac{\sqrt 3}{2 } \end{array}$