If $2 \mathrm{cosec}^2 30^{\circ} + x \sin^2 60^{\circ}- \large\frac{3}{4} $$\tan^2 30 =10$ then the value of $x$ is ________

Question

$\begin{array}{1 1}(A) \; -3 \\(B)\; +3 \\(C)\;\pm 3 \\(D)\;0 \end{array}$