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", "Jurisdiction", "Content removal", "Limitation of liability", "Arbitration", "Unilateral change", "Choice of law", "Unilateral termination", "Contract by using"].