match the followings:
| A. Resting State | I. Efflux of K+ |
| B. Depolarization | II. Influx of Na+ |
| C. Repolarization | III. Opening of voltage-gated K+ channels |
| D. Hyperpolarization (After-hyperpolarization) | IV. Maintaining Na+/K+ gradient |
1
A-I, B-III, C-IV, D-III
2
A-IV, B-II, C-I, D-III
3
A-IV, B-III, C-II, D-I
4
A-I, B-II, C-III, D-IV