Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
we may accept various forms of payment , including credit and debit cards , and payments made through paypal and facebook payments . 

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