Consider the system of non-linear differential equations \frac{d x}{d t}=x y-2 x \frac{d y}{d t}=x y+x+y^{2}-1 Select the option that gives a complete list of equilibrium points for this system.

А (2, —1)(2, – B(-1,2), (0, –1), (0,1) Cс (2, -1), (-1,0), (1,0) D (0, –1), (0,1)