Which of the Following Statements About the Phases of an Action

Multiple Choice

Which of the following statements about the phases of an action potential are correct?

A) During the hyperpolarizing phase, the permeability of the membrane to sodium ion is greater than its permeability at rest
B) During the hyperpolarizing phase, the permeability of the membrane to potassium ion is greater than its permeability at rest
C) During the repolarizing phases, the permeability of the membrane to potassium ion is greater than its permeability at rest
D) Both during the hyperpolarizing phase, the permeability of the membrane to sodium ion is greater than its permeability at rest and during the repolarizing phases, the permeability of the membrane to potassium ion is greater than its permeability at rest are correct
E) Both during the hyperpolarizing phase, the permeability of the membrane to potassium ion is greater than its permeability at rest and during the repolarizing phases, the permeability of the membrane to potassium ion is greater than its permeability at rest are correct