Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you may not assign or otherwise transfer your airbnb account to another party . 

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