Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
5.2 we may terminate your accounts for violation of this agreement . 

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