When Introduced into a Region Where an Electric Field Is $\overrightarrow { \mathbf { v } }$

Multiple Choice

When introduced into a region where an electric field is present,a proton with initial velocity $\overrightarrow { \mathbf { v } }$ 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) as described in both (a) and (c) .