Two infinte plane sheets A and B are shown in the figure the surface charge densities on A and B are `(2//pi) xx 10^(-9)C//m^(2) and (-1 //pi) xx 10 ^(-9)C//m^(2)` rospectively .C,D, E are three points where electric fields (in N/C) are `E_(C) , E_(D) and E_(E)` repectively.
A. `vecE_(C)= 18hati`
B. `vecE_(D)= 54hati`
C. `vecE_(D)= 18hati`
D. `vecE_(E)= 18hati`