Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
all parties to the arbitration will have the right , at their own expense , to be represented by an attorney or other advocate of their choosing . 

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