Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you may cancel your order or pre-order of physical goods at any time prior to dispatch and order acceptance . 

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