Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
third-party shopping services are subject to terms and conditions provided by the respective third parties . 

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