A Region of Space Contains a Uniform Electric Field Oriented

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 Φ₀. A second frame is placed in the same electric field in such a way that the magnitude of the electric flux through it is Φ₀/2. How is the plane of second frame oriented with respect to the plane of the first one?

A) at a 90° angle
B) at a 60° angle
C) parallel to the first frame
D) perpendicular to the first frame
E) at a 30° angle