Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
in addition , host agrees to pay co-host for all co-host services completed prior to co-host 's termination within 14 days of co-host 's termination via the resolution center . 

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