Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you are responsible for resolving any problems that we encounter in order to proceed with your order . 

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