Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
please note that if you purchase a subscription through the apple itunes store or our iphone application , you may cancel automatic renewals by selecting manage app subscriptions in your itunes account settings and selecting the subscription you want to modify . 

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