Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you may not assign , delegate , or transfer these terms , by operation of law or otherwise , without fitbit 's prior written consent . 

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