Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
airbnb may without restriction assign , transfer or delegate this agreement and any rights and obligations hereunder , at its sole discretion , with 30 days prior notice . 

```
. OPTIONS: ['Choice of law' 'None' 'Jurisdiction' 'Arbitration' 'Unilateral change'
 'Content removal' 'Contract by using' 'Limitation of liability'
 'Unilateral termination'].