As an Electron Moves in the Direction The $\vec { E }$

As an electron moves in the direction the $\vec { E }$ field lines

A) it is moving from the field's low potential to high potential and the electric potential energy of the system electron-electric field is increasing.
B) it is moving from the field's low potential to high potential and the electric potential energy of the system electron-electric field is decreasing.
C) it is moving from the field's high potential to low potential and the electric potential energy of the system electron-electric field is increasing.
D) it is moving from the field's high potential to low potential and the electric potential energy of the system electron-electric field is decreasing.
E) both the electric potential and electric potential energy of the system electron-electric field remain constant.