Which Statement(s) Is/are True? (Select All That Apply.)

Which statement(s) is/are true? (Select all that apply.)

A) All cells that are activate by the learning experience become engram cells.
B) Cells expressing CREB are most likely to become engram cells.
C) Cell expressing CREB are intrinsically more excitable than cells that do not.
D) Cells expressing CREB inhibit those cells not expressing CREB.
E) None the above