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