# The ratio of the coefficient of $x^{10}$ in $(1-x^2)^{10}$ and the term independent of $x$ in $(x-\large\frac{2}{x}$$)^{10}$ is ?
$\begin{array}{1 1} 1:31 \\ 1:30 \\ 1:32 \\ 1:33 \end{array}$