Part d$)$ What is responsible for the lowest frequency transition around $1$ Hz$?$ Select all that apply.

A$.$ Electrons and protons accumulate at a metal$/$solution interface due to applied electric field

B$.$ Ions accumulate at a metal$/$solution interface due to applied electric field

C$.$ Lattices of positive and negative ions

D$.$ Dipoles align along a surface

E$.$ Separated positive and negative ions

F$.$ Formation of a double layer