Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
airbnb is liable for any negligent breaches of essential contractual obligations by us , our legal representatives , directors , or other vicarious agents . 

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