Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
airbnb reserves the right , in our sole discretion , to limit the number of co-hosts a host may invite for each listing and to limit the number of listings a co-host may manage . 

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