When Introduced into a Region Where an Electric Field Is

When introduced into a region where an electric field is present, a proton with initial velocity will eventually move

A) along an electric field line, in the positive direction of the line.
B) along an electric field line, in the negative direction of the line.
C) to a point of decreased potential.
D) to a point of decreased potential
E) as described in both (a) and (c) .