Which of the Following Statements Are True of Electrical Changes

Multiple Choice

Which of the following statements are true of electrical changes at the sarcolemma (Select all that apply)

A) A polarized muscle fiber has more Na+ ions inside that outside.
B) Depolarization is the movement of K+ ions into the cell.
C) Repolarization is the movement of Na+ ions out of the cell.
D) A polarized muscle fiber has a positive charge inside and a negative charge outside.
E) Depolarization is a reversal of charges; the cell has a positive charge outside and a negative charge inside.
F) An action potential is depolarization followed by repolarization.