Simplify :$ (\sqrt 5 )^{-3}(\sqrt 2 )^{-3}$

Question

$\begin{array}{1 1} \large\frac{10^{1/2}}{100} \\ \large\frac{1}{100} \\ \large\frac{10}{\sqrt {100}} \\ \large\frac{1}{10} \end{array} $