Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
if you are under 18 , do not view such content . 

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