Two Planes of Charge with No Thickness,A and B,are Parallel

Multiple Choice

Two planes of charge with no thickness,A and B,are parallel and vertical.The electric field in region I to the left of plane A has magnitude
And points to the left.The electric field in the region to the right of B has magnitude
And points to the right.The electric field in the region between the two planes has magnitude
And points to the right.The surface charge density on planes A and B respectively is

A) ,σ.
B) ,σ.
C) σ, .
D) σ, .
E) 2σ,σ.