Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
`` virtual space '' is virtual space that is stored on our servers and made available in the form of virtual units . 

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