Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
class arbitrations , class actions , private attorney general actions , and consolidation with other arbitrations are not allowed under our agreement . 

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