Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
10.2 ratings and reviews by guests and hosts must be fair , truthful and factual and may not contain any offensive or defamatory language . 

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