Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
if you do not agree to the revised terms , you must stop using the services . 

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