Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
third-party services are offered and distributed by third parties at the sole responsibility of third parties . 

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