Consider a Positively Charged Square Plate of Finite Size (A

Consider a positively charged square plate of finite size (a few centimeters on edge) . Point P' is centered a few centimeters above the plate. As point P' moves perpendicularly away from the plate, the magnitude of the E-field at point P'

A) decreases monotonically (continually) but not uniformly.
B) decreases at first, then increases.
C) does not change.
D) Hold it! None of the above answers is correct.