Which of the following is a true statement? Question 21 options: a) Inactivated Na+ channels help the action potential go towards the soma. b) Inactivated K+ channels help the action potential go towards the axon terminal. c) During the absolute refractory period, another action potential can't be produced. d) The absolute and relative refractory periods help action potentials travel bidirectionally. e) The presence of K+ leak channels prevents the action potential from moving toward the soma.