Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you may not sell , transfer or assign your account or its contractual rights , licenses and obligations , to any third party ( including , for the avoidance of doubt , permitting another individual to access your account ) without the prior written consent of linden lab . 

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