Four Negative Charges Are Moving in a Uniform Electric Field

Four negative charges are moving in a uniform electric field E on the paths shown in the figure here. The dots represent the initial and the arrows the final positions of the charges. The charges experiencing a change in their electric potential energy are

A) 1 and 2.
B) 3 and 4.
C) 2, 3, and 4.
D) 1, 2, 3, and 4.