Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
5.3 we may terminate your account ( s ) to protect the best interests of the service and the community or if we believe you pose an unacceptable risk to the community . 

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