Which of the following is equivalent to $x^3+2x^2-x-2$ ?

Question

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