A region of space contains a uniform electric field oriented along the y-axis. A frame of surface area A is placed perpendicular to the y-axis in the xz-plane. The magnitude of the electric flux through this frame is ?0. A second frame is placed in the same electric field in such a way that the magnitude of the electric flux through it is ?0/2. How is the plane of second frame oriented with respect to the plane of the first one?