Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
if you are not the bill payer , we will assume that you have received permission from the bill payer . 

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