Refer to the Figure Shown

Refer to the figure shown.
Why do the channels at II on the figure stay open longer than those at I?

A) Channels at I are responding to a depolarization, whereas channels at II are responding to a hyperpolarization.
B) The depolarization is a faster event compared to the repolarization.
C) Channels at I are less sensitive to voltage compared to channels at II.
D) Channels at I become inactivated, whereas channels at II close due to membrane voltage.