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