| List I | List II | ||
| A. | Waiver | I. | Cancellation of all of some terms of contract |
| B. | Alteration | II. | Substitution of a new contract for an old contract |
| C. | Rescission | III. | Parties to a contract abandon their mutual rights |
| D. | Novation | IV. | Modification of terms of contract |
Fill in the blank with the correct option:
She has been working here __________ five years.