Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
if you set up an associated nintendo account for your child below the age of 13 , the receipt for any transactions that take place through the child 's nintendo account will be sent to your email address . 

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