$cosec \bigg(\large\frac{13 \pi}{6}\bigg)$ is equal to

Question

$\begin{array}{1 1} (a)\; \large\frac{\sqrt 3}{2} \\ (b)\;\large\frac{-\sqrt 3}{2} \\ (c)\;\large\frac{2}{\sqrt 3}\\ (d) \;\large\frac{-2}{\sqrt 3} \end{array}$