Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
7.4.2 hosts and co-hosts may agree on a fee ( `` co-host services fee '' ) in consideration for the co-host services provided by the co-host . 

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