Simplify $\large\frac{2}{(x-1)^2} - \large\frac{2}{(1-x^2)}$

Question

$\begin{array}{1 1} (a)\; \large\frac{4x}{(x-1)^2}\\ (b)\; \large\frac{4x}{(x-1)^2(x+1) } \\ (c)\; \large\frac{4x}{(x+1)^2} \\(d)\; \large\frac{4x}{(x^2-1)} \end{array}$