Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
currency rates are based on various publicly available sources and should be used as guidelines only . 

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