Find the vertices of the square if one of its vertices is (1,1) and the square passes through origin?

Question

$\begin{array}{1 1}(a)\;B(-1,1),C(-1,-1),D(1,-1)&(b)\;B(1,1),C(1,-1),D(-1,1)\\(c)\;B(1,1),C(-1,1),D(1,1)&(d)\;B(-1,1),C(-1,-1),D(-1,-1)\end{array}$