Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you must cancel your subscription before it renews each month in order to avoid billing of the next month 's subscription fee to the payment method you provided . 

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