Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
once bought , the giftor will receive an order confirmation and receipt . 

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