Match Column I with Column II:
| Column I | Column II |
|---|---|
| (a) P-wave | (i) Depolarisation of ventricles |
| (b) QRS complex | (ii) Repolarisation of ventricles |
| (c) T-wave | (iii) Coronary ischaemia |
| (d) Reduction in the size of the T-wave | (iv) Depolarisation of atria |
| (v) Repolarisation of atria |