Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
supercell may manage , regulate , control , modify or eliminate virtual items and/or merchandise at any time , with or without notice . 

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