Two Planes of Charge with No Thickness,A and B,are Parallel $\frac { \sigma } { \varepsilon _ { 0 } }$

Multiple Choice

Two planes of charge with no thickness,A and B,are parallel and vertical.The electric field in the region between the two planes has magnitude $\frac { \sigma } { \varepsilon _ { 0 } }$ .The electric field in the region to the left of A and the electric field in the region to the right of B may have the magnitudes

A) 0,0.
B) $\frac { \sigma } { \varepsilon _ { 0 } }$ , $\frac { \sigma } { \varepsilon _ { 0 } }$ .
C) $\frac { 2 \sigma } { \varepsilon _ { 0 } }$ , $\frac { 2 \sigma } { \varepsilon _ { 0 } }$ .
D) given in any answer above.
E) given only in answer (a) or (b) above.