Two Large,flat,horizontally Oriented Plates Are Parallel to Each Other,a Distance

Multiple Choice

Two large,flat,horizontally oriented plates are parallel to each other,a distance d apart.Half way between the two plates the electric field has magnitude E.If the separation of the plates is reduced to d/2 what is the magnitude of the electric field half way between the plates?

A) 4E
B) 2E
C) E
D) 0
E) E/2