Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
in many cities , hosts may have to register , get a permit or obtain a license before preparing food or serving alcohol for sale . 

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