Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
in addition , both host and co-host acknowledge that their co-hosting relationship will terminate in the event that airbnb ( i ) terminates the co-host service or ( ii ) terminates either party 's participation in the co-host service . 

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