Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
headspace reserves the right , at its own expense , to assume the exclusive defense and control of any matter otherwise subject to indemnification by you , and in such case , you agree to cooperate with headspace defense of such claim . 

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