Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you may decline to renew at any time prior to the commencement of a renewal subscription . 

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