Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
( a ) we warrant to you that any product purchased from us will , on delivery , conform in all material respects with its description and be of reasonably satisfactory quality . 

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