Which One of the Following Statements Is True Concerning the Work

Which one of the following statements is true concerning the work done by an external force in moving an electron at constant speed between two points in an electrostatic field?

A) The work done is always zero joules.
B) The work done is always positive.
C) The work done only depends on the speed of the electron.
D) The work done depends on the total distance covered.
E) The work done depends only on the displacement of the electron.